What do you mean by anneal?你说的退火是什么意思?The puller also applied growing and vacuum anneal of laser crystal.该设备也适用于多种激光晶体的生长和激光晶体的真空退火.Firstly, equiaxed microstructure could be produced by treatments including hot compressi...
Next day the EU summit strengthened their ultimatum.次日，欧盟峰会发出了更加强硬的最后通牒。to issue an ultimatum发出最后通牒He gave me an ultimatum: either Tom had to leave, or me.他向我发出了最后通牒: 不是汤姆离开, 就是我离开....
Ellen's face wrinkles as if she is about to sneeze.艾伦的脸皱了起来，好像要打喷嚏。When we sneeze, our eyes close.打喷嚏的时候眼睛会闭上。What exactly happens when we sneeze?我们打喷嚏究竟是怎么回事？...