minus adj. (opp. plus) 负(的),减的;零下的。 a minus sign 负号,减号。 a minus quantity 负数,负量。 minus charge 【电学】负电荷。 minus electricity 阴电,负电。 minus material 次品。 The temperature is minus twenty degrees. 温度是零下二十度。 没有…的;丢掉,失去;减(去);少掉。 Seven minus four is three. 七减四等于三。 a purse minus its contents 空钱袋。 He came back minus an arm. 他失去了一只胳膊回来了。 He was minus fifty dollars. 他花了五十块钱。 n. 负数,负量;负号,减号;差少,欠缺,损失。
The equijpment is improved in design and is made into a fully automatic h - beam assembling machine referred to the same foreign sort of products . the positioning of the flange and web is performed through hte plus and minus screw mandrel drivenby the mtr accurately . and there is a highly precise coder to feedb - ack and show the accurate size on the unit set to guarantee the flanges , the webs with different width different width within the specified range for accurate positioning and automatic alignmet . there is no need to make adjustment each time 该机是本厂参考国外同类产品基础上改进设计而成的全自动h型钢组立设备,其腹板翼板定位采用电机精确带动正反丝杆夹紧,另一侧设有小行程液压夹紧,能确保规定范围内的不同宽窄的腹板,翼板精确定位,自动对中准确,无须每次作调准。