烯空气跟空气十分近似.Olefin gas closely approximates air.所有的主要难点都涌现在烯酮 ( 1 ) 的合成中.All the chief difficulties crop up in the synthesis of the enone ( 1 ).某碳氢化合物已知可能是烯烃或是烷烃.A hydrocarbon was known to be either an alkene or alkane....
The quarreling couple stood in the sitting room, eyeball to eyeball.夫妻俩站在起居室里吵架,你瞪着我, 我瞪着你.The bumping and shaking make extra work for your eyeball muscles.(车辆的)颠簸和摇动给眼球的肌肉带来额外的工作.You prepared to let me stub it out on yo...
Air-entraining agent increases impermeability of hybrid fiber concrete.引气剂有助于提高混杂纤维混凝土的抗渗性。Foam has a robust and independent foam connection, water absorption in less than 25 %. impermeability.发泡有强韧而独立的发泡连接, 吸水率在25%以内. 具...
Israel had barely recaptured the Golan except for some Syrian outposts in the Mount Hermon area.以色列刚刚重新攻占戈兰高地(不包括赫尔蒙山地区的一些叙利亚前哨阵地).A road near the Syrian - Israeli border in the Golan Heights.在戈兰高地上叙利亚和以色列边境的一条公路.I look ...