protective cover
释义
保护罩：一种永久性外部容器，用于保护书籍免受大气和处理损坏。
例句
1·Protective cover screw is a kind of crane accessories.
丝杆防护套是起重机的一种配件。
2·They have a protective cover of bracts and scales from time of initiation.
从开始孕育时，花芽便具有一层由苞片和鳞片构成的保护层。
3·With sleek wooden handle and includes protective cover with shoulder carrying strap.
时尚的木制手柄，包括与肩部背带防护罩。
同义词
[机]防护罩，覆盖保护层
protecting hoodprotecting cap
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