envelope

用法例句

Ultrafine Graphites (UFG) prepared by explosive de to nation in the water protective medium was studied.

介绍了以水为保护介质和冷却剂利用炸药爆轰制备纳米石墨的方法。

light in a transparent protective case.

有透明保护外壳的灯。

A protective covering that encases the eggs of some insects and fish.

卵的保护外壳能包裹某些昆虫和鱼卵的一层保护性外壳

According to new research, the influenza virus coats itself in a protective fatty shield that is tough enough to withstand cold temperatures.

一项最新研究发现，流感病毒表面包有一层脂肪保护外壳，这种外壳十分坚硬，能抵御严寒。

Its thin outer shell had protected its liquid interior.

它薄薄的外壳保护着它呈液体的内脏。

A virus is covered with a hard protective shell of protein.

病毒的外部有一个蛋白质保护性硬壳。

A protective external shell or case, as of a rotifer or any of certain other microscopic animals.

护身硬壳轮虫或任何其它微生物体外的保护性的壳或套

A protective covering of bony plates or scales.

护身甲壳保护骨盘或介壳的覆盖层

A tough, protective covering, such as the bony scales covering certain animals or the metallic plates on tanks or warships.

甲壳坚硬的，保护性外壳，如履盖某些动物的骨质鳞片或坦克或战舰上的金属壳

An attachment or a covering put on a machine to protect the operator or a part of the machine.

外壳机器上的附加装置或外罩，用以保护操作者或机器的某一部分

The turtle is protected by its hard shell.

龟受到它的硬壳的保护。

These organisms have enzymes that contribute to the weakening and penetration of the protective outer skin.

这些微生物具有可以减弱和穿透果蔬保护性外壳的酶。

The float is a chemical resistant polypropylene casing with a firmly bonded electrical cable protruding.

浮球采用抗化学物质腐蚀的聚丙烯外壳,配置坚固保护的电缆接头。

vacuum flask, complete with cases

保温瓶,外壳装配齐全

A hard outer structure, such as the shell of an insect or a crustacean, that provides protection or support for an organism.

外骨骼为生物提供保护或支持的坚硬的外部结构，象甲壳类动物或昆虫的骨盘

Most shells are cracked by hand, too; workers dust their fingers in wood ash or linseed or castor oil, for protection.

外壳同样大多以手工敲开，工人手指上得沾些木灰或是亚麻子或海狸油来保护手。

The egg is originally crumbly, the very thin outer shell protects the internal organs of the liquid, once the boiled water cook, the internal organs become hard.

鸡蛋原来是易碎的，薄薄的外壳保护着液态的内脏，开水一煮，内脏变硬。

The egg had been fragile. Its thin outer shell had protected its liquid interior. But after sitting through the boiling water, its inside became hardened.

鸡蛋原来是易碎的。它薄薄的外壳保护着它呈液体的内脏。但是经开水一煮，它内脏变硬了。

"Limited service controller "on-off"switch must be in the extreme "off"position to open the enclosure door."

在打开外壳门之前,要保证开关处于"关闭"位置,否则,不能对控制装置的开关进行维护修理。