检测圆锥管螺纹基面中径的方法有很多,但测量过程复杂.There are many ways to measure base - level pitch diameter of cone - shaped thread.基面要求: 表面不应有积水 、 灰尘 、 漆膜 、 油污.The base level requirements: there should be no surface water, dust, paint, grease...
He said he had felt threatened by a group of hoodies outside a shop.他说自己在一家商店外面受到一群小混混的威胁。Wholesale Kid robot hoodies, BBC, Ed hardy , Roca wear.批发小子机器人展台, 英国广播公司, 海关哈乐嘉磨损....