The belt offset adjustment mechanism uses photoelectric detection to check beltedge, without contacting the belt, to keep beltedge flat and prolong service life.
本机构光电检测皮带边缘，与皮带无触，保护皮带边缘平整， 延长使用寿命；
2
If you're wearing a ribbon belt, think about adding a matching ribbon edge to your linens or the back of your reception chairs.
如果你系了一条丝带，就要考虑给你的桌布或是椅子的后背加一些相配的丝带。
3
The ocean floor rock, basalt, along with the sediment that built up on top of it, was drawn down at the edge of an ocean as part of the conveyor-belt mechanism that moves the continents.