ball valve [英]bɔ:l vælv[美]bɔl vælv球阀,弹子阀[例纯改句]The supplier shall provide necessary technical support , tools and material for ensuring normal operation of the whole jacket ball valve.供货商应提供为保证整个夹套球阀(jacketballvalve)正常运行所需的悔帆技术支持、工具碧裤雹和必要的材料。
标签:ball,valve
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