按照降低能耗的要求，应选用压损小的流量计。
In order to reduce the power consumption flow meters with low pressure loss should be used.
卧式旋风筒内压损较小，仅为立式旋风筒的一半。
The pressure drop in horizontal cyclone is only a half of that in vertical type.
产品在包装时必须留有足够的空间以防止产品压损。
Product is to be packed with enough room as not to be squashed.
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