Methods Similated to duplicate model keys in sameness nipping manner, then observe and summarize the slope angel of profile modeling reamer trace how to change.

方法用铝板制作相同坡长不同齿坡角的钥匙模型，在相同夹持方式下模拟增配过程，观察并总结钥匙上仿形刀痕迹倾斜角度的变化。

youdao

Isotopic trace injection profile logging theory is based on isotopic tracer measurement technology.

同位素示踪注水剖面测井的理论基础是同位素示踪测量技术。

youdao

At last, the author obtained the equation of ray trace in the GRIN ball lens with the index profile which is quadratic and drew some important conclusions.

研究了二次抛物线型的GRIN球透镜的光线轨迹方程序；得出其轨迹为椭圆曲线及一些重要结论。

youdao

He told jurors he left a green towel as a colour match which he said explained why police found a minor trace of DNA on the towel which matched his profile.

BBC: Danilo Restivo