把厚木板的一端用夹具固定在桌子的边上。Clamp one end of the plank to the edge of the table.工件夹持 装置叫做钻模或夹具.Work - holding devices are called jigs and fixtures.要使用一套定位夹具来精心地使外线圈保持在正确的位置上.The outer coil needs holding in position very carefully...
He has a fondness for outrageous double entendre.他很喜欢用无礼、下流的双关语。His fondness for his characters sometimes veers towards the sentimental.他对那位主人公的偏爱有时也稍显矫情.She has a fondness for red wine.她喜爱红葡萄酒.Among his many enthusiasms...
Such is the case in pyrrole, thiophene, and furan.吡咯, 噻酚和呋喃的情况就是这样.It'shows that the key step is the synthesis of 4 - methyl - dihydro - furan - 2 , 3 - dione.研究结果表明关键步骤为原料 4- 甲基 -2, 3- 呋喃二酮的合成.A novel furan resin w...