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物料的输送主要靠皮带机,但流动固体散料的计量是很困难的。
The things are carried by the belt machine. But it is difficult that the flowing solid things are counted.
youdao
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物料的输送主要靠皮带机,但流动固体散料的计量是很困难的。
The things are carried by the belt machine. But it is difficult that the flowing solid things are counted.
youdao