曾为水井供水的蓄水层正式宣告干涸了。The aquifer which had once fed the wells was pronounced dry.地下蓄水层是一些有水的岩石层,如沙岩和白垩岩.An aquifer is a water - bearing rock stratum such as sandstone and chalk.就蓄水目的说, 这些地下水库比地表水库有很多优点.For storage purposes,...
我想让自己这样像把剑一样把电焊杆举过头顶.I suggest posing me with a soldering wand over my head like a sword.采购产品金刚石工具, 工具, 雕刻工具,星火焊机, 电焊, 机械及设备.Diamond Tools, Posalux Tools, Engravement Tools , Spark Welding Electrodes, Machinery and Equip...
拉上手闸to put the handbrake on他踩紧车闸.He jammed on the brakes of the car.到二十三点三十分电门总闸就要关掉.The lights would be switched off at the main at twenty - three thirty....
一只狮蚁的幼虫蜷曲着努力爬行.A doodlebug curls in his effort to get there.其他自然防治火蚁的途径也是可取的.Other nature natural ways fire fight the fire ants are also possible.研究者们在佛罗里达发现168个火蚁的巢穴.The researchers observed 168 nests of imported fire a...
阐述了铜包钢线的特点及生产工艺.Characteristics as well as the production of copper - clad steel wire were described.简述了自动合金化模型在包钢钢包炉上的应用.The paper discusses the application of LF automatic alloying technology.介绍了铜包钢线材的类型 、 性能、应用领域以及生产方...