自1908年以来氯就被添加进饮用水当中。Since 1908, chlorine has been added to drinking water.氯用来给水消毒。Chlorine is used to disinfect water.加氯是为了杀死细菌。Chlorine is added to kill bacteria....
In Europe, AC is usually generated at 50 Hz.欧洲的交流电输出频率通常为50赫兹。A measure of sound intensity equivalent to one decibel at 1000 Hz.一种声强的量度单位,其值等价于1000Hz1分贝.The frame rate is then 60 Hz.这时,帧速率为60赫....
长度: 8 - 0页,12级字型, 双倍行距, 用钉书机装钉并标示页码.Length: 8 - 10 typed pages , double - spaced in 12 - point type, stapled, with pages numbered.这种机器可以将纸牌装钉在袜子上.This kind of machine can staple paper brand - label on the socks.古铜色铝合金边框,...
...calorie controlled diets.控制热量的饮食It eschews complicated workout regimens, tedious calorie counting, and loss gimmicks.它避免复杂的养生运动 、 枯燥的卡路里计算和华而不实的减肥技巧.There seems to be little difference whether you eat all your calorie...
断续的小雨下了有好几天了.The rain has been on and off for several days.未焊满未焊满是指焊缝表面上连续的或断续的沟槽.D, do not weld fully weld fully to denote weld superficially continuous or intermittent groove....