Beloved 99 times: arrogant police superintendent hard to deal

Gu Liancheng didn't know when he appeared next to him.

He swept Lunan with a strange look and explained in a low voice.

"The types of guns and explosives can be identified."

"..." Lu Nan looked away awkwardly from the man's eyes.

Is the Chief Superintendent hating him?

Gu Liancheng glanced at him and suddenly ordered: "after locking the suspect, in addition to extracting the shooting residue from the shooter, the sleeve of the corresponding hand, the skin shot by the bullet, other carriers and guns need to be extracted for the next inspection, analysis and comparison."

Then she suddenly looked at Qiao Jiang.

The latter glanced at him, with a shallow seriousness on his beautiful face.

"I know that when extracting, you can stick it with tape, dip it with cotton balls, or use the shooting residue extraction device of the finished product."

"I'll do it when I get back to the police secretary."

The extract certificate must be quantitatively analyzed by colorimetry, ion selective electrode and UV-vis spectrophotometry in the laboratory.

Gu Liancheng nodded. Before he left, his thin lips vomited out, "don't say I brought you out in the future."

Lunan: "

Qiao Jiang sighed and opened his mouth helplessly.

"The residual trace material evidence can also be compared with the morphology of the suspected injured object, and the physical and chemical properties and chemical elements can be analyzed by instrumental analysis to assist in the identification of the injured object."

Then she shook her head and walked in the other direction.

"..." Lunan silently looked at the direction she left and blinked puzzled.

Did the Chief Superintendent and Qiao Jiang forget one thing.

He's a criminal policeman, not a forensic!

Isn't it normal that he doesn't understand this?

……

On the way back, Qiao Jiang sensitively found that since he got out of the hotel, the man had been so worried for a long time.

After a long time, she gently pulled it on his sleeve.

"Uncle, what are you thinking?"

Men's thoughts come back.

He glanced at her with a slight frown.

"I was thinking about the death of diplomats."

Qiao Jiang: "

Does she know that well?

She was ready to ask, and Gu Liancheng's thin lip gently opened.

"In ballistics, the firing angle is also called the firing angle, or firing angle."

Qiao Jiang looked at him blankly, "so?"

"Another expression related to the firing angle is called the hit angle, which refers to the included angle between the ballistic tangent of the impact point and the tangent of the target surface."

Qiao Jiang: "yes??? “

Looking at her vacant face, the man sighed slightly and patiently explained.

"Since the trajectory of the warhead is generally regarded as a straight line when inferring the firing angle, and the target is regarded as a vertical plane for convenience, in general, the firing angle and the hit angle are complementary, that is, the firing angle = 90 ° - the hit angle."

Qiao Jiang:

Gu Liancheng: "

He rubbed the center of his eyebrows with a headache.

Lunan can't see it anymore.

He coughed and explained: "Miss Qiao, when inferring and calculating the firing angle, it mainly refers to the inference of the firing angle“

Hearing the speech, Qiao Jiang snorted.

After saying so much, I just wanted to express this.