The heptane compound has a primary purpose as a plasticizer for doublebase propellant systems.化合物庚烷的主要用途是作为双基推进剂的增塑剂.However, it is difficult to produce multi branched i heptane and restrain its cracking.正庚烷异构化的难点在于高选择性地...
Self - heating of two typical n - alkane ( n - heptane and n - hexadecane ) is studied by Accelerating Rate Calorimeter.研究燃油在绝热条件下的燃烧情况对实际应用中改善燃油燃烧性能,改进发动机工况等有着重要的指导意义.The heptane compound has a primary purpose as a plas...
Methods : Ultrasonographic features of 46 pathologically confirmed thyroid carcinomas were analyzed retrospectively.方法回顾分析46例经手术病理证实为甲状腺癌的高频声像图表现.Adrenal or ovarian carcinomas may be the cause of excessive hair growth.肾上...
娜奥米会被鸟儿吱吱喳喳的叫声唤醒。Naomi would waken to the twitter of birds.你为什么把我从如此美妙的梦中唤醒?Why did you wake me from such a beautiful dream?她气得失魂落魄,是她妈妈在走廊里的声音唤醒了她.Her mother's voice in the corridor roused her from an angry trance....
The bank yesterday revealed a 30 per cent nosedive in profits.该银行昨天透露其利润骤降30％。Our survey revealed that these allergies were mainly one-offs.我们的调查显示这些过敏多为一次性反应。The fog had lifted and revealed a warm, sunny day.雾已经散了，看来是温暖...
The flowers give off a heady scent at night.这些花晚上散发出醉人的芳香.If plastic and rubber are burnt, they'll give off poisonous gases.要是塑料和橡胶被焚, 就会放出有毒的气体.Fireflies give off flashes of light when they fly at night.萤火虫夜间飞行时发出闪...
The nurse told the child to spit out the stone.保姆叫孩子把果核吐出来.Spit out that gum and pay attention.把那块口香糖吐出来，注意听。...a gob of spit.一口唾沫She spit into the little tray of mascara and brushed it on her lashes.她朝一小盒睫毛膏里吐了点唾沫，然后蘸了一...