其中一些表皮很坚硬——就像坚果的外壳——可以提供额外的保护。
Some of these coats are hard—like the shell of a nut—for extra protection.
海龟用外壳保护身体免受敌人的侵袭。
优质不锈钢板外壳贴膜保护，寿命更长。
The stainless steel shell with protection film ensures longer service life.
功率晶体管通常封装在金属外壳中加以保护。
The power transistors are generally encased in metal for protection.
高强度加厚的外壳设计更有效的保护了产品齿轮及内部配件。
The thickened high strength shell provides accurate gear centering and high mechanical effectively.
我们的产品包括手机外壳，住房，手机保护膜，口哨。
Our product line includes mobile phone cover, housing, mobile phone protective film, whistles.
我们的产品包括手机外壳，住房，手机保护膜，口哨。
Our product line includes mobile phone cover, housing, mobile phone protective film, whistles.
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