Siheyuan starts from a better life

Chapter 229, Cleanser
"Gong Jiang, I brought you the tools." Wang Tianlai ran over panting from a distance holding a wooden box.

"Wang Gong, it's hard work," Jiang Yan said, taking the wooden box from Wang Tianlai's hand.

Jiang Yan opened the wooden box and took out the balance, only to realize that Wang Tianlai's industrial-grade balance is an experimental-grade balance according to the grades.

The grades of industrial balances are generally divided into three grades: precision balances, analytical balances and experimental balances.Precision balance: A precision balance is an instrument used to accurately measure the mass of an object, and its accuracy can reach 0.1 mg, which can be used for precise experiments and scientific research.

Analytical balance: An analytical balance is an instrument used to measure the mass of an object, and its accuracy can reach 0.01 mg, which can be used for analysis experiments and scientific research.

Experimental balance: An experimental balance is an instrument used to measure the mass of an object, and its accuracy can reach 0.1g, which can be used in experiments and scientific research.

The grades of these three balances are divided by precision, the precision of the precision balance is the highest, the precision of the analytical balance is second, and the precision of the experimental balance is the lowest.

But even the experimental balance with the lowest precision is enough for Jiang Yan at present.

The balance is small and looks very beautiful, and there are a lot of more than a dozen weights ranging from 0.1 grams to 10 grams.

Jiang Yan put the balance on a table and set the scale inside to zero.

"" Wang Gong, trisodium phosphate. "Looking at the balance, he said without raising his head.

Hearing Jiang Yan's words, Wang Tian went to the pile of bottles and took the bottle with trisodium phosphate written on it and handed it to Jiang Yan.

Jiang Yan carefully poured the trisodium phosphate onto the balance, weighed out the weight he needed, and put him aside for later use.

Then Jiang Yan weighed out the weights he needed, such as sodium carbonate, sodium metasilicate, and sodium hydroxide. After weighing these things, pour them all into the prepared large basin, and pour in an appropriate amount according to the proportion. Clean water, instruct the workers to stir with a stick, so that these things can be fully dissolved in water.

The originally clear water gradually became turbid, and after a while the turbidity disappeared, and the water became clear again, but the water gave off a slightly pungent smell.

"Deputy Team Leader Guo, please go get some masks and gloves. This solution is highly corrosive. Workers must wear masks and gloves when operating."

After Guo Jianjun heard Jiang Yan's words, he responded, turned around and walked out. Guo Jianjun, who came over in a hurry, handed Jiang Yan a pair of gloves and a mask.

Jiang Yan directed the workers to put on masks and gloves, picked some relatively small parts and put them into the prepared solution.

"Stay in it for four hours, then take it out and rinse it with clean water."

After saying this, Jiang Yan thought for a while, and then said to Guo Jianjun: "Looking back, you need to find a few workers who are more thoughtful and flexible. Some of these parts still have stains in the gaps, and the workers need to use brushes to clean them. Clean it up bit by bit."

"Understood, Mr. Jiang, I'll go find the workers you need right now."

Jiang Yan didn't care about Guo Jianjun who left, but took a pen and wrote out his entire recipe.

"Mr. Wang, Mr. Zhang, this is the formulation of this cleaning agent. This cleaning agent can remove most of the stubborn dirt, especially the engine oil that has been used for a long time."

After Jiang Yan finished speaking, he handed the formula in his hand to Wang Tianlai and Zhang Xiang.

"Jiang Gong, this is for us." Holding the recipe Jiang Yan handed over, Wang Tianlai said with some doubts.

"Isn't that what you are holding in your hand? You have also seen my operation just now."

As soon as these words were said, the faces of Wang Tianlai and Zhang Xiang blushed. Just now they looked very carefully, and even secretly wrote down the ingredients and weight of the potion.

Stealing a teacher is something that needs to be experienced in the early stages of any country's development.

The first 5-year plan of SL seems to be a great event to promote the rise of great powers. In essence, it is just the introduction and absorption of some technologies from Europe and the United States.

At that time, SL's steel mills, tractor factories, aircraft factories, hydropower stations, and other large and small industrial sectors all imported American construction technologies and norms, and did a little localization.

Even during World War II, SL has been stealing lessons from Europe and the United States. For example, the heavy-duty trucks behind it are completely imitated of the Citigroup-aided Steepunk trucks.

After World War II, SL still continued the old path of technology introduction, and even the SL spy organization KGB had a department dedicated to stealing technology from the West.

This period is the honeymoon period of the two countries, and the current SL at best regards the country as its own little brother, and it is said that the only thing that remains unchanged between countries is their interests.

Although SL has aided the country with a lot of industrial equipment and sent a large number of engineers, almost all of these equipment are backward and mainstream, and even have a lot of reservations when teaching our country's workers.

There are policies above, and there are countermeasures below, and stealing teachers will emerge as the times require.

In order to be able to learn the technology of SL people, the people below are all eight immortals crossing the sea, each showing their magical powers. With the acquiescence of the high-level, many key sub-technologies have been learned from our own hands in this way, laying a solid foundation for future development.

Under Jiang Yan's guidance, Wang Tianlai and Zhang Xiang started to get busy there.

While Jiang Yan was busy in the factory with his people, he was thousands of miles away in Sijiu City.

Early in the morning, after Xu Damao asked his leader for leave, he returned to the courtyard and drove a jeep to an alley in a hurry. He drove very slowly, and while walking, he was still looking at each other, as if he was looking for someone.

"Da Mao, here." At a corner in the alley, the uncle Yi Zhonghai waved to Xu Damao who was watching.

Xu Damao saw that Mr. Fen was being recruited, so he ran over at full speed.

"Master, you and my mother are sitting in the back."

"When I came out just now, I called Sister Zao, and she was waiting for us there."

"I found that now Da Mao is doing things more and more organized." After hearing Xu Damao's arrangement, Yi Zhonghai praised Xu Damao.

"Grandpa, you have praised it, this is what our boss taught us.

"By the way, Grandpa, I see what Jia Zhang is busy with these days." Xu Damao who was driving suddenly couldn't ask.

"What can I do? It's not that I asked the matchmaker to introduce someone to Jia Dongxu, but this Jia Zhang is also the same. He doesn't even look at the conditions of his own family, but also wants to find a job in the city."

Before the uncle opened his mouth, the eldest mother who was sitting in the funnel spoke first, and Xu Damao listened to her tone a little bit unkindly.

This aunt is well-known in the courtyard as a warm-hearted and kind person. No matter who is in trouble, she will reach out. She is very popular in the courtyard. Xu Damao has never heard of her blushing with anyone in the courtyard.

Now that she can say such things, it can be seen that Jia Zhang must have offended the eldest mother, and it is not serious.

(End of this chapter)