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- The oldest stars in the Galaxy exhibit a metal deficiency relative to hydrogen. 银河系中最年老的恒星表现出一种对氢而言的贫金属性。
- Silanes consist of a chain of silicon atoms covalently bound to hydrogen atoms. 构成硅烷烃的是一条硅原子链接形成的主链和以共价键链接在主链上的氢原子。
- The membrane formed inside the porous of support by MOCVD process is resistant to hydrogen embrittlement. 由金属有机气相沈积法(MOCVD)在载体孔内沈积钯膜有助于防止氢的脆化作用。
- Evidently, the sulfats normally in seawater are converted to hydrogen sulfide as the water passes through the warm crust. 显而易见,平常含于海水的硫酸盐在海水通过暖地壳时转变成了硫化氢。
- Eventually hydrogen becomes fixed in traps in the metal, leading to hydrogen embrittlement. 终于,氢渐渐地被固定在金属内部的“陷阱”中而导致氧脆。
- Acoustic-emission techniques have been used to determine the rate of cracking of highstrength steel due to hydrogen embrittlement. 声发射技术已被用来确定高强钢因氢脆而开裂的速率。
- The surface was rendered using MOLCAD and color-coded according to hydrogen acceptor/donor density. 这个新的化合物的分布经处理产生了下一代的衍生物。
- How much do all these figures stack up to? 这些数字的总和是多少?
- With di-iso-butyl dimethoxy silane(DIBS), DQ catalyst was more sensitive to hydrogen regulation. 使用二异丁基-二甲氧基硅烷,DQ催化剂的氢调敏感性更好。
- There was a long lag in forwarding mail to us. 转寄给我们的邮件晚了很久才拿到。
- Foreign nationals were asked to leave the country. 外国侨民被要求离开该国。
- A country must have the will to repel any invader. 一个国家得有决心击退任何入侵者。
- Acid A substance that gives rise to hydrogen ions(or H3O+) when dissolved in water. 酸:当溶解在水中时,可以产生氢离子或的物质H3O+。
- Swimming is the best way to tone up your body. 游泳是健体强身的最好方法。
- They denounced him to the police as a criminal. 他们向警方告发他是罪犯。
- Expressed as the proportion of carbon to hydrogen, fuelwood is roughly 91 percent carbon. 若论氢和碳的比例,木柴中碳的占比约为百分之九十一。
- Have a glass of beer to rinse your dinner down. 喝杯啤酒把你吃的晚饭冲下去。
- You can do it this way if you care to. 如果你乐意的话,可以这样做。
- Young ladies used to have lessons in deportment. 少女以前要上仪态课。
- A stunt man needs to have a good guardian angel. 当特技替身演员的得有个守护天使来保佑。