若设施宽大务求无油时，无须选各族无油泵，如：水环泵、分子筛吸附泵、溅射离子泵、高温泵等。

If large facilities to ensure no oil, no oil pump need not choose ethnic groups, such as: water pump, molecular sieve adsorption pump, sputter ion pumps, heat pumps.

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最后，文中还探讨和设计了一套基于TMS320 LF 2407 A DSP为控制核心的燃油泵用无刷直流电动机控制驱动器设计方案。

Finally, another set of controller based on TMS320LF2407A DSP is also discussed and designed to satisfy the development tendency of aero fuel pump system.

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本实用新型属于机电产品，特别涉及一种往复式抽油泵无杆驱动机构。

The utility model belongs to an electromechanical product, in particular to a rodless driving mechanism for a reciprocating oil well pump.

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