双语例句
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A flapper valve (22) may be used as another seal.
挡板阀门(22)可以用作另一密封件。
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GD high vacuum flapper valve is used to put through cut off the airflow in vacuum pipeline.
GD型高真空挡板阀用于接通或切断真空管路中的气流。
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GD high vacuum flapper valve is used to put through or cut off the airflow in vacuum pipeline.
GD型高真空挡板阀用于接通或切断真空管路中的气流。
应用推荐
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