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Double loop high speed vacuum suction system, spread to the surrounding air by the central.
双回路高速真空吸气系统，由中央向四周扩散吸气。
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This pump is the vacuum and in central part of car homework.
该泵是真空吸污车在作业中的核心部分。
youdao
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This pump is the vacuum and in central part of car homework.
该泵是真空吸污车在作业中的核心部分。
youdao