丝通就是一有内牙的圆通。丝通的牙孔分通孔和不通孔，普通丝通为通孔；牙孔不通的丝通叫做平底丝通。如图
路易丝·布朗于7月25日下午11时47分通过剖腹产手术生下来。
Louise Joy Brown was delivered by Caesarean section at 11:47 p.m. July 25.
他打了电话，问了问题，听天文学家说了一通，然后告诉查利·达顿：“安塔芮丝的一个黑夜里，你们的地球会绕着太阳旋转93周。”
He phoned, asked the question, listened. He told Charley Dalton, "your planet Earth makes ninety-three revolutions around your sun Sol during one period of darkness on Antares II."
合成过程中碳氢化合物和氢气的混合气体通入由热丝辐射加热的沉积室内，基体硅片置于热丝下方附近。
Deposition was carried out by passing gaseous mixture of hydrocarbon and hydrogen through a heated reaction chamber, in which a hot tungsten filament was held near the substrates.
应用推荐