它们看上去有益健康，实则掩盖了其为精加工食品这一事实。Their healthy image disguises the fact that they are highly processed foods.我们只是用磨床将工件抛光和精加工.We used grinding machines only to smooth and finish a workpiece.最普通的精加工工序是用机械的方法, 如研磨, 磨削或用磨料抛光.The ...
在冷却系统里加防冻剂以防止霜冻.Fill the cooling system with antifreeze as a protection against frost.DEG是 一种溶剂,一般用作生产防冻剂.DEG is used in antifreeze and as a solvent.选择乙二醇作为钻井液的防冻剂可以满足勘探钻进工作的要求.Choosing ethylene alcohol as antifreeze can...
Despite their speed, the IDSN, ADSL and HDSL protocols do have limitations.尽管传输速度快, ISDN 、 ADSL和HDSL协议也都有局限性.With HDSL, they can do it in an hour.用HDSL,安装只要1小时.HDSL is the most established of the XDSL technologies.HDSL是X...