Specially designed air knife can prevent the flux from entering the preheating zone causing fire and remove excessive flux.

特制风刀设计，防止松香进入预热区产生火灼以及将多余松香排掉。

youdao

For experimental setup to calibrate spectral radiance by applying a diffuse plane, the measured spectral radiance can be obtained through integral of spectral radiation flux entering the spectrometer.

在利用漫反射板标定光谱辐亮度的实验装置中，标准灯完全可以近似为点光源。

youdao

The first lens group (G1) receives a light flux entering along a first optical axis (A1).

第一透镜组(G1)取入沿第一光轴(A1)入射的光束。

youdao