“The hormonal profile associated with high [waist-to-hip ratio] . . . may favor success in resource competition, particularly under stressful circumstances, ” writes Cashdan.
它能促使资源竞争的成功，特别是在有压力的环境下。
Whereas when using bowl shaped bit, the success ratio of branching is high, process simplified, time saved and cost reduced.
而碗状钻头人为叉孔成功率高，施工工艺简单，节省了时间，降低了成本。
After office study and field experiment, using suspend plug and high sand concentration with little ceramsite to control fracture, advanced fracturing success ratio.
通过室内研究和现场试验，采用“悬塞”控缝、高砂比小陶粒控缝等配套技术，有效地控制了微裂缝在压裂过程中的影响，提高了压裂成功率。
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