I was confronted with an array of knobs, levers, and switches.我面对的是一大堆旋钮、控制杆和开关。Levers and pulleys are simple machines.杠杆和滑轮是简单机械.The workers can manipulate the gears and levers of a machine skillfully.工人们能熟练地操纵机件....
Since our company established in 1997, bending ourself to manufacture the photics lens and eyeglass.本公司自一九九七年成立以来, 一直致力于光学镜头、镜片的制造.His solution : DAC Vision would develop its own state - of - the - art machinery for maki...
'I'll do it, Eleanor,' Angus said, quickly jumping up. But this time she only shook her head. 'I'll manage,' she said firmly.安格斯一跃而起道：“让我来，埃莉诺。”可是，这一次她只是摇了摇头，坚定地说：“我能应付。”Then I noticed the c...
用带子把滑水板绑在船顶后，我们就在多佛登上了气垫船。Strapping the skis on the roof, we boarded the hovercraft in Dover.我用带子绑这个盒子.I used tape to tie up the box.她工作时把小孩用带子捆扎在背上.She works with a baby strapped to her back....
Methods: The cell line transfected with E 1 A gene was treated by Epirubicin, Taxotere and 5 - fluorouracil respectively.方法通过PEI -Fe3O4 纳米粒介导将E1A基因导入 人乳腺癌细胞系MCF-7,经G418筛选获得稳定表达E1A的转染细胞(MCF-7-E1A )....