The chief features of this kind of pump are the wider range of working pressure, the higher pumping speed at the higher pressure and the higher maximum forepressure.
这种泵的主要特点是：工作
强范围宽、在较高强下有较大抽速、最大
口强较高。
口)前
,排
,口The chief features of this kind of pump are the wider range of working pressure, the higher pumping speed at the higher pressure and the higher maximum forepressure.
这种泵的主要特点是：工作强范围宽、在较高强下有较大抽速、最大口强较高。
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