铜是热和电的良导体.Copper is a good medium for the conduction of heat and electricity.木头是热和电的不良导体.Wood is a poor conductor of heat and electricity.铜是电的良导体.Copper conducts electricity well....
60瓦的电灯泡a 60-watt light bulb电灯泡坏了.The bulb has gone.戴夫和米歇尔邀请我跟他们一起出去,不过我可不想整个晚上都当电灯泡.Dave and Michelle invited me to go out with them but I don't want to play gooseberry all evening....
Firstly, they must make certain that their pension needs are adequately catered for.首先,他们得确保他们能获得足够的养老金。She went to the company to draw her pension.她去公司领退休金。The basic retirement pension will go up by £7.95 a week.基本退休金每周...
应用燃烧法在较低温度(600℃)下,于空气中快速合成BaMgAl10O17∶Eu2+ ( BAM ) 荧光体.The aluminate phosphor BaMgAl 10 O 17∶ Eu 2 + ( BAM ) was successfully synthesized by rapid combustion process at 600 ℃ furnace temperature....
Objective: To prevent late cerebral ischemic stroke carotid endarterectomy ( CEA ).目的: 应用颈动脉内膜切除术改善大脑循环并预防缺血性脑卒中.Endarterectomy removes fatty plaque an incision in the neck.通过在颈部切口去除内膜上的脂肪斑块.Methods: 17 cases of carotid ...