碟形卫星天线的定向性非常强。Dish aerials are highly directional.雷最近编制了定向性量表, 它可以较好地预言支配行为.More recently Ray developed the Directiveness Scale, which is well able to predict dominant behaviour.采用了超声的方法来切短露头于AAO范本的纳米碳管,增加纳米碳管膜的定向性.Sonic...
The traditional herbicide is still dominating the present agrochemical market.在目前的农药市场中,传统除草剂仍是除草剂市场的主体.The green agrochemical contains light - sensitive pesticide, trans - gene pesticide , biopesticide, etr.绿色农药包括手性农药 、...
Precision forging technology is developed rapidly in production of spur bevel gear.精密锻造直齿锥齿轮在我国发展很快.Thus, using modified roll method, 4 - axis CNC spiral bevel gear machine can manufacture hypoid gear.这样, 在四轴数控铣齿机上可以实现变性...
她镇定而且坚强，绝不会垮掉。She's calm and strong, and she is just not going to crack.我绝对不能眼睁睁地看着这家公司垮掉。I really can't afford to see this company go belly up.我丢了工作，我的世界好像都垮掉了。I lost my job and it was like my world collapsed....
The ionosphere is that region of space contatining electrically charged species.电离层是指含有带电物质的空间区域.Its upper limit is determined by the conditions in the ionosphere.其上限由电离层的状态而决定.Rockets and artificial satellites can go fa...
The farmyard was quiet,with just a few chickens scratching about.这农家庭院静悄悄的,只有几只鸡在四处扒食。The road passes a farmyard.那条路经过一个农家场院。The farmyard was snugly sheltered with buildings on three sides.这个农家院三面都有楼房,遮得很严实.He made his w...