| 释义 |
1 [电]?电阻比 ... 差动电阻式应变计 unbonded elastic wire resistance type strain meter 电阻比 resistance ratio 敏感元件中两个差动变化的金属丝电阻值 R ... 2 ?阻力比率 ... RR Repetition Rate 重复率 RR Resistance Ratio 阻力比率 RR Respiration Rate 呼吸率 ... 3 ?抗性倍数 抗性倍数(Resistance ratio,RR)=所测定种群的LD50/敏感品系的LD50,以LD50的95%置信限是否重叠作为判断不同种药剂毒力差... 4 ?性倍数 抗性倍数(Resistance ratio,RR)=所测定种群的LD50/敏感品系的LD50,以LD50的95%置信限是否重叠作为判断不同种药剂毒力差...
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The concept of pure water and the control range of resistance ratio of water used by battery have been specified. - 2
The resistance of German cockroach(field strain) to beta-cypermethrin was highest, of which resistance ratio was 4.5. 德国小蠊野外品系对高效氯氰菊酯的抗性倍数较高，达4.5倍。 - 3
Formula for internal resistance ratio under a quick section - load, expressions on sectional flexural torque and shear force when rod bent are given. 给出了截面快速加载下的内阻比计算公式，以及杆件弯曲时截面弯矩、剪力的表达式。
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