On the basis of accurate theory, using laser emitter and photosensitive diode as testing sensor, a set of laser equipment for automobile axle depth of parallelism test is designed and produced.

利用激光发射器和光敏接收器作为检测传感器，基于准确的检测理论，设计出了激光检测法检测汽车前、后轴平行度的检测装置。

youdao

There was no significant effect of burying depth on the underground biomass and root distribution, but the root density increased at each burying depth of drip irrigation emitter.

不同埋设深度对高羊茅根系分布有一定的影响，在每个滴头附近的根系密度和重量明显增加。

youdao

There was no significant effect of burying depth on the underground biomass and root distribution, but the root density increased at each burying depth of drip irrigation emitter.

不同埋设深度对高羊茅根系分布有一定的影响，在每个滴头附近的根系密度和重量明显增加。

youdao