Only valves such as packless diaphragm or bellows type should be used.
只能使用无衬垫膈膜阀或波纹管阀。
声喊叫；声发出
出生
美国作家)Only valves such as packless diaphragm or bellows type should be used.
只能使用无衬垫膈膜阀或波纹管阀。
We could hear he was bellowing commands to his troops.
我们听见他正向他
兵士声发布命令。
The wounded tiger bellowed out.
受伤老虎咆哮着。
Two or more folds parallel to each other with adjacent folds in opposite directions, resembling the bellows of an accordion. Alternative term: fanfold.
两个(
)平行摺不同边方式连接，类似手风琴腔。
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