史前的狩猎者和采集者prehistoric hunters and gatherers这表明这种工艺是起源于史前的黑暗中.This fact suggests that the beginnings of the art were already shrouded in prehistoric darkness.我们现今的标准与史前的标准未有重大出入.We haen't strayed too far from the cae...
卤素也具有吸收紫外线和分解快这两种特性.Halogens also have the necessary absorption in the ultraviolet and rapid dissociation.强烈的胞内杀菌作用可以通过骨髓过氧化物酶 - 过氧化氢 - 卤素杀菌系统发挥威力.Potent intracellular bactericidal action may be exerted through the myelo...
下列插图是一些常见的杠杆和压铁位置.Illustrated below are some commonly accepted positions of the lever and weight.安装杠杆和压铁有助于阀瓣的关闭.Lever and weight mounted to assist the disc in closing.配置杠杆和压铁是为了在外部控制阀瓣运动.The lever and weight arrangement...
史蒂芬·利神父为死者主持了临终圣礼。Father Stephen Lea administered the last rites to the dead men.他们阻止他参加圣礼。They debarred him from the sacrament会众参加圣礼.The congregation assists at divine service....
They will go all out to get exactly what they want.他们将尽最大努力实现自己的愿望。We will be going all out to ensure it doesn't happen again.我们要全力保证此事不再发生。He launched an all-out attack on his critics.他全力抨击批评他的人。...
环纹滚刀可以实现高效率的径向进给滚齿加工.The ring teeth hob can realize high efficient radialfeedhobbing.重型移动滚刀架, 长行程.Heavy duty shifting hob head , with long shifting travel.齿刀是怎么演变成齿轮滚刀的.Transformation from Rack - type Geer Cutter into Ge...