The pumping well Diagnostic Technique is a mathematical method based on wave equation to analyse the problem of pumping well.

抽油井计算机诊断技术是以波动方程为基础，分析抽油井问题的数学方法。

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A new diagnostic quantity-moisture helicity is derived from the moisture equation, and the difinition of helicity, and its influence factors are analyzed in details by the dimensional analysis.

构造了新的诊断量——水汽螺旋度，并对影响水汽螺旋度变化的因子做了分析。

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A new diagnostic quantity-moisture helicity is derived from the moisture equation, and the difinition of helicity, and its influence factors are analyzed in details by the dimensional analysis.

构造了新的诊断量——水汽螺旋度，并对影响水汽螺旋度变化的因子做了分析。

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