Jig plates can be divided into fixed , hinged demountable and swing types.常见的钻模板有固定式、铰链式、可卸式 、 悬挂式等四种结构形式.Oil prices continued an upward swing in New York this morning.今天上午纽约油价继续上扬。His moods swing alarmingly.他的心情时好时坏，令人担...
Large, poorly controlled plants must reduce emissions to 1.2 million lbs / mBtu.大型的以及控制污染设备较差的工厂必须减少排放达120万磅/百万英国热量单位.(每个英国热量单位等于252卡——译者注. )The luggage weighs 40 lbs.这行李重40磅.Tighten adjustment screw to 3 N & middot; m (...