In addition, we also developed a variety of connector and the valve gate series.
此外我们还开发了各种规格的连接器和阀闸系列。
The open angle indicating device should display the open state of the valve gate exactly.
开度指示机构应准确地显示阀门的开启状态。
The open angle indicating device should display the open state of the valve gate exactly.
开度指示机构应准确地显示阀门的开启状态。
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