Barium is found in some oilfield brines in concentrations greater than 100 mg / litre.在有些油田卤水中,钡的浓度大于100毫克/升.Practical applications for heat flow measurements in ocean floors are the location of hot brines.洋底热流量测量的实际目的是圈...
An elevator mechanic can work the machinery directly by turning this lever.电梯修理工可以转动这根杠杆直接操作机器。He was a born mechanic with a flair for design.他生来就是个有设计天赋的机械师。He worked as a motor mechanic.他是一名汽车修理工。...
Pear trees are grafted on quince rootstocks.梨树被嫁接到榅的根茎上。Such rootstocks or cultivars were reproduced true to type by vegetative propagation.这些钻木和品种,通过无性繁殖长成和亲本一样的类型.Apple orchards comprised mainly of standard trees on se...
他们开着征用的小车，在城里结队而行。They drove in convoy round the city in commandeered cars.这小车真轻巧.This car is really light.这辆小车外表看起来还不赖.The car is not bad in appearance....