A method of producing crystal sodium fluoride with sodium fluosilicate and sodium carbonate is introduced.本文介绍了以氟硅酸钠、纯碱为原料生产晶体氟化钠的工艺,并对操作条件作了详细的说明.Compositions, crystallization mechanisms and properties of the fluosilica...
Only occasionally did the telltale redness around his eyes betray the fatigue he was suffering.只有从他发红的眼圈上偶尔能看出他非常疲惫。The telltale scratches on the lock showed that it had been picked.留在锁上的刮痕显示那锁曾经被撬开过.No one likes a malic...
I used a sledgehammer to drive the pegs into the ground...我用一把大锤子把短桩打进地里。She hung up the shirt with two ( clothes ) pegs .她用两只 衣夹 挂上衬衫....the noise of the hammer striking the steel pegs.锤子敲击钢栓的噪音He builds furniture using...
The two part capstan I turned and mounted the lower half.我镟制并安放两组分绞盘的下半部.Capstan imagesetter works such as shown in Figure 2.绞盘式照排机的处事道理如图2所示.Sailors hove up the cable with windlass or capstan.水手们用绞盘或起锚机把缆绳拉起来.Capstan im...