在选用压力机时,必须严格按照许用负荷曲线图来选择.It is shown that permitted load curve must be implemented in choosing crank press.提出的设计数据如安全系数、许用应力均根据生产实践的应用所确定.Some datum, for example safety factor and allowable stress are put forward based o...
I pushed through the crowds and on to the escalator.我挤出人群，踏上了自动扶梯。I don't like escalator — I'll climb the stairs.我不喜欢自动扶梯,我要爬楼梯.You can ride the escalator up but have to descend on foot.你可以搭电梯上去,但要自己走下来....
一张张白帆随着微风舞动。The white sails billow with the breezes they catch.树冠在微风中婆娑摇曳。The tops of the trees rippled in the breeze.微风渐强，旗帜舞动起来，塑料彩纸吱吱作响。The breeze grew in strength, the flags shook, plastic bunting creaked....
Their political rights must be safeguarded.他们的政治利益必须得到保证.A nod's as good as a wink , their political rights must be safeguarded.不用多说, 他们的政治权益必须得到保证.The interests of minorities will have to be safeguarded under a new...
A few years before his death he perfected a method of converting bagasse into paper pulp.在他去世前几年,他改进了用甘蔗渣制纸浆的方法.Commercial cellulase, hemicellulase and pectinase were applied to hydrolyze sugar cane bagasse.应用纤维素酶 、 半纤维素...