该行业一直在努力开发一些可以替代这些气体的无害物质。Industry has been working at developing harmless substitutes for these gases.一种气体的密度the density of a gas你如何计量气体的体积？How do you measure the volume of a gas?...
He laments that people in Villa El Salvador are suspicious of the police...他哀叹埃尔萨尔瓦多镇的居民居然不信任警方。In the poem he laments the destruction of the countryside.在那首诗里他对乡村遭到的破坏流露出悲哀。In the'sonnet - to Science ', Poe la...
Drag onto the page. Drag the yellow diamond to resize keyway.拖到绘图页上. 拖动黄色菱形可调整键沟的大小.Was the keyway created using a min arc condition dimension of .0.63?键槽的生成是用了0.63最小圆狐的尺寸条件.Drag onto the page. Right - click to edit keyw...
There was Mrs Bellingham, stirring sugar into her tea...贝林厄姆太太正在那里将糖搅进茶里。Next she tried the Information operator in Bellingham, Washington.下一步,她试着打华盛顿贝灵汉的电话问讯处.Without further adventure , they reached the dwelling of Gov...
事态一旦平息，贝克就为他的决定辩白。Once the dust had settled Beck defended his decision.几星期来,我从你那儿听到的只是辩白之词.I have received nothing but excuse from you for weeks.他的辩白非常中肯.His defending argument was well to the purpose....