selection pressure

During breeding for vertical resistance, horizontal resistance tends to decline because of negative selection pressure.

当培育垂直抗性时,由于负的选择压力, 水平抗性趋于下降.

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The earth pressure is calculated by using Rankin theory or Column theory. Selection of Working Fluids for Low-temperature Solar Thermal Power Generation Organic Rankine Cycles

通常采用朗金理论或库仑理论计算作用在挡土墙上的土压力.低温太阳能热力发电有机朗肯循环工质的选择

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Selection and design of threaded flange on high pressure wellhead

超高压油气井口装置螺纹法兰的选用与设计

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The changes of susceptibility to deltamethrin were correlated with the selection pressure.

家蝇对溴氰菊酯的敏感性变化与药剂中溴氰菊酯的选择压有关.

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Effective solutions are proposed for the selection of independent circuit, calculation of density for varying water temperature, calculation of thermal pressure and simulation of pump characteristic curve in numerical simulation of pipe networks.

对管网数值仿真中独立回路的选择、水温变化时密度的计算、热压的计算、水泵特性曲线的模拟等均提出了有效的解决方法。

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It can be placed in a selection of locations but it will always be found somewhere in the high pressure part of the circuit in between the compressor output and the thermal expansion valve.

它可以被安装在几个位置上，但这些位置仅限于线路的高压侧，且在压缩机输出端和热力膨胀阀之间。

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ERIC ( IRU) is highly conserved, for its variation is restricted by the natural selection pressure, or it's "selfish DNA".

ERIC（IRU）高度保守，可能其变异受到自然选择压力的限制或它本身就可能是自私的DNA。

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To increase underflow density of the tailings mainly depends on the application of the advanced high-pressure thickening technology, selection of flocculent and appropriate control influencing flocculating settling factor.

提高尾矿底流浓度主要依靠高压浓缩先进技术的应用和絮凝剂的选择及影响絮凝沉降因素的合适控制。

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Shape selection and dimension optimization of direct jet high pressure spray nozzle were done.

对直射式雾化喷嘴进行选型及内部尺寸寻优.

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The design regulations and material selection, oil tank design and whole ice pressure, local ice pressure, anti-ice structure are discussed.

本文仅就设计规范及材料的选用、油罐设计及它对总体方案的影响；以及整体冰压力及局部冰压力的计算考虑，和抗冰结构的选择等进行研究和讨论。

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It introduces the conditions for the fuselage static disk to be installed through position selection. The Position where the disturbance pressure is zero will have the true atmosphere static pressure detected.

阐述了机身静压盘选位安装的条件，安装在机身上扰动压力为零的点位处就能探测到真实的大气静压。

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Entropy and natural selection pressure and their applications to population genetics of forest tree

熵和自然选择压及其在林木群体遗传学中的应用

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Strength Test Pressure Calculation for Pressure Pipeline and Blanking Plate Selection

压力管道的强度试验压力计算及其盲板选用

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Evolutionary selection pressure has probably entrenched the behavior in social animals such as ourselves.

其原因大概是由于进化中的适者生存的压力固化了像我们这样的社会性动物的行为.

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