He stepped toward the metal grating at the chapel's entrance.

他朝着礼拜堂的金属槅门入口走去。

youdao

It is hard to make such metal grating encoder.

因此，反射式金属光栅编码器的制作有较高的难度。

youdao

It is hard to make such metal grating encoder.

因此，反射式金属光栅编码器的制作有较高的难度。

youdao