At the same time, the company retains the generatrix to enter.同时, 公司保留强劲流动线进.The generatrix shape of tapered roller processed with centerless grinding was not line but curve one.无心磨削圆锥滚子母线的形状不是直线,而是凹曲线,分析了生产原因、影响因素,为进一步研...
Macadam type bases involving successive layers of crushed rock bound with rock dust were also used.人们曾经使用“石结”基层——几层由石粉黏结在一起连续的碎石层.The construction techniques of cement treated macadam base are always paid more attention ...
同样, 英国也不能指望迫使外国的大米销售商廉价供应大米.Similarly, Britain could not expect to force foreign sellers of rice to supply it more cheaply.这家汽车销售商的展室中有几款豪华轿车.There are several luxurious cars in the automobile dealer's showroom.他们就像...