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URL title: 黄铜过滤器 曼德束集团
URL description: 闸阀的启闭件是闸板运动方向与流体方向垂直，闸阀只能做全开和全关，不能做调节和节流，目前广泛用于供水系统，
URL keywords: 闸阀的启闭件是闸板，你的运动方向与流体方向相垂直，闸阀只能作全开和全关，不能作调节和节流，目前广泛应用于供水系统。
URL last crawled: 2022-09-17
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