泡沫欠平衡钻井气液流量组合优选研究 关键词：泡沫钻井；多相流；流量组合；优选 [gap=1440]Key words：foam drilling；muhiphase flow；flow rate combination；optimization
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Market growth rate relative market share matrix, in order to achieve the cash flow balance through the combination of business optimization.
又称市场增长率-相对市场份额矩阵，为了通过业务的优化组合实现企业的现金流量平衡。
At last, flow rate, the influence of pressure difference and screw combination on flow rate were confirmed by experiments.
文章最后对流量、流量与压差的关系及不同螺杆组合对流量的影响进行了实验验证。
Medium flow rate and pressure change is bigger, and it is a multi-pass combination, long-term use of plate heat exchanger, plate of dislocation surface easy to attack.
介质流量和压力改变较大、并且又是多程组合、长期运用的板式换热器，容易发作板片错位表象。
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