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汉语拼音：yǐ wán

一种无色、无臭、不溶于水的气态链烷烃CH 3 CH 3，存在于天然气中，为石油裂化的一种副产品，主要用作燃料或通过脱氢作为乙烯的原料。

1. 有机化合物，无色无臭的可燃气体，稍溶于水、乙醇和乙醚，存在于天然气中，用来合成有机物质，也可以用做燃料。

• So here we have a cycle of a planet which is like our Earth, but is all made of ethane and methane and organic material.

  这个星球的循环非常类似地球，不过是由乙烷和甲烷以及有机物构成。

• If there had been, the moon would have been covered with an ocean of the stuff several meters deep and Cassini saw nothing of the kind.

  如果真有那么多，这颗星球的表面将会被几米深的乙烷所覆盖，但是“卡西尼号”却什么也没发现。

• And these molecules, especially methane and ethane, can be liquids at the surface temperatures of Titan.

  这些分子尤其是甲烷和乙烷，在土星地温下是液态的。

• and natural rubber and polyethylene deethanization materials, does not apply to any swelling of the U.

  而天然橡胶和分乙烷材质会肿大，不分用于U。

• The polymerization of ethylene oxide was carried out with catalysts of many components whose main components were organometallic compounds.

  采用有机金属化合物为主体的多组分催化剂进行环氧乙烷的聚合试验。

• The manufacturer should validate that the ethylene oxide exposure does, in fact, produce a sterile product.

  制造商应验证环氧乙烷的暴露，实际上，生产无菌的制剂。

• All the products are made of medical grade high polymer material, and sterilized with EO, pyrogen-free, non-hemolysis reaction, non-toxic.

  本产品采用医用高分子材料制造，经环氧乙烷气体灭菌、无菌、无热原、无溶血反应、无急性全身毒性。

• Benzen and dichloroethane is cheap and easy to separate.

  苯、二氯乙烷价格便宜，易于购买与分离。

• It's the only moon with an atmosphere, a yellow smoggy one filled with methane, ethane, and propane clouds.

  在大气层，只有月球在，一个黄色的烟雾弥漫的，一个充满着甲烷、丙烷和乙烷云的地方。