Aluminium and other metals are normally badly corroded by alkalis.铝和其他金属通常会被碱严重腐蚀.Acids neutralize alkalis and vice versa.酸能使碱中和,碱亦能使酸中和.Weak alkalis ionize partly ( ionize ) in water to give hydroxide ion.弱碱 在水中部份电离,放出氢...
The River Rhine rises in Switzerland.莱茵河发源于瑞士.the inflationary effects of price rises物价上涨引起的通货膨胀The price rises will be cushioned by welfare benefits...社会福利将缓解价格上涨带来的负面影响。The rises are the result of a comparability study...
这个年轻人一下子穿上衬衫，扣好了扣子。The young man slipped on the shirt and buttoned it up.他把衣领的扣子扣上，紧紧地裹住了他的粗脖子。He buttoned his collar tightly round his thick neck.他的驾驶执照也被扣了8分。He also had his licence endorsed with eight penalty points....
不变性指的是一致的部分.Invariance refers to areas of agreement.相对论涉及两个似乎对立的概念, 相对性和不变性.The theory of relativity is concerned with two seemingly opposite ideas, relativity and invariance.我们迟早要问:这个定律是否经得起相对论不变性的检验?Sooner or later we ...
The pendulum - torque type of erector is extensively employed on gyro verticals.陀螺垂直器上广泛地采用由摆和力矩马达组成的修正装置.The torque of the couple is intimately associated with a couple.力偶矩与力偶密切相关.Equipped with electronic control torque...