Expression of hydrogenion concentrations in terms of molar concentrations is rather cumbersome.用摩尔浓度表示氢离子浓度是相当麻烦的.In 1927, at Chou - k'ou - tien, near Peking, a hominid lower molar of unusual pattern was discovered....
He says they mistakenly believed the standard licenses they held were sufficient.他说他们曾经误以为有正规执照就足够了。Drivers have ten days'grace to renew their licenses.驾驶员更换执照有10天的宽限期.These three clubs could come under close scruti...
达比一直在寻找改善铁质的方法，他猛然想到可以不用木炭熔炼，而改用焦炭。Darby was looking for a way to improve iron when he hit upon the idea of smelting it with coke instead of charcoal.空罐经过熔炼后,还可重新利用.Those empty tins are then melted down and reused.在高炉中熔炼...
Several notable researchers are studying the effects of hyperventilation.几位著名的研究人员正在研究通气过度的后果。Researchers need a growing supply of corpses for dissection.研究人员需要更多的供解剖用的尸体。This vast archive has been indexed and made acces...