讨论了泵中V带传动的可靠性设计与传统设计比较，不仅根数少、尺寸小、质量轻，而且可靠性高。
Reliability design of V-belt drive get not only a small size? Light wight but also high reliability in the circulating pump.
轻烃泵机械密封属于汽液两相密封。
The mechanical seal for light hydrocarbon pump belong to the seal for liquid and gas phases.
这种优化设计是一种经济实惠的设计方法，可使同参数泵结构紧凑、外形美观、重量轻。
By means of the optimization, the pump can be design with compact structure and lighter weight.
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