n. cowl
misc. outer cover
所述外盖与内盖上设有相配合的环边与圆板。
The outer lid and the inner lid are provided with a ring edge and a round board which are matched.
使用后须旋紧外盖!
一种化学用新型密闭式微波萃取容器,由罐体、密闭盖和外盖组成。
The utility model relates to a new type airproof microwave extractive container for chemical use, which consists of a container body, an airtight cover and an external cover.
应用推荐