“你知道这会需要付出什么?”他一边问,还从他的公文包里取出两个晃动的金属球,“黄铜球……”。
"You know what it takes?" he asks, reaching into his attache case to display two metallic spheres dangling from a string. "Brass balls."..
低压力头应黄铜,并应靠近排水阀和中间包输送到一个排水板地板。
The low pressure header shall be brass and shall be near the panel floor with drain valves and tundishes piped to a drain.
金色黄铜包角,箱边以饰钉加固。
金色黄铜包角,箱边以饰钉加固。
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