Three: LED lamp belt surface cleanliness.

三：看LED灯带表面的清洁度。

youdao

Will not adsorb any impurity in the conveyor belt surface.

更不会吸附任何杂质于输送带表面。

youdao

And dirty steel belt surface, impurity and Pb phase accumulation during alloy belt manufacture lead to worse adhesion between alloy layer and steel back.

而在合金带的生产过程中，钢带表面未清洗干净，存在杂质及铅相偏聚等，是导致合金层与钢背之间结合不良的主要因素。

youdao

Rather than take the belt loop to the office, she detoured on surface streets through her old neighborhood, just to catch a glimpse of the house.

NEWYORKER: Shauntrelle

Although the moon's topography has already been comprehensively charted, these other kinds of map exist only for a narrow belt around the equator, amounting to just a quarter of the moon's surface.

ECONOMIST: Divining water