Water industry chiefs were rapped yesterday for failing their customers.昨天,水利行业的头头们因为怠慢客户而受到批评。Ms Tyson also had her knuckles rapped for doing this.泰森女士也因为这么做而受到了指责。Mary Ann turned and rapped on Simon's door.玛莉·安转身急...
为批量生产带有螺纹的尼龙旋塞,设计了一种带有螺旋顶杆的旋塞注塑模.Mold with spiral ejection pin was designed for the mass production of threaded nylon cock.所述长顶杆的前端最好为锥形头.The front end of the long post rod is at best in a cone shaped head.随着温度升高, 感温元件(阀...