All the royal cars are fitted with electronic homing devices.所有的皇家轿车都装有电子自导引装置。These cruel devices are designed to stop prisoners bending their legs.这些残酷的刑具是用来阻止犯人弯腿的。Most mechanical devices require oil as a lubricant.绝大...
Centring on this focal point, the full text divides into three parts.围绕此重点, 全文分三个部分.Introduced in the paper is a newly developed centring - roll system used on rotary pipe mill.介绍了一种用于斜轧钢管生产的新式定心辊装置.At some studios two a...