The lower limit of flowing pressure at various oil-gas ratio and water-cut stage in Wenwu Area is calculated using former soviet Craynof's rising theory formula of upright flow of oil and gas.

利用前苏联克雷诺夫的油气垂直管流中的上升理论公式计算了温五区块不同气油比下不同含水阶段自喷流压下限。

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Results showed that there were a big root-canopy ratio and dry weight when the lower limit of controlled soil water content decreased at the same irrigation treatment.

研究结果表明：在同一灌水方式中土壤含水率下限小的冬小麦根冠比大，且根系总的干重也大；

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The assemble criterion of sensor for design was advanced. At last, a method of increasing signal-to-noise ratio and reducing flux lower limit value of vortex flowmeter was advanced.

椐此提出通过双钝体诱发卡门涡街增强涡街强度、提高涡街流量计的信噪比，进而降低涡街流量计的流量下限的方法。

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Lending growth is still relatively sluggish, and new laws limit bank fees, so the only way to improve the ratio is to lower costs.

WSJ: Lenders See Little Choice: Layoffs