Insecticide resistance genes are useful when there's insecticide about, but not when there isn't: then, they can be detrimental.
抗药性在有杀虫剂的地方有用，但是在没有杀虫剂的地方就没什么用了：有时甚至是有害的。
I began to think how ridiculous it is that our most useful allure is resistance and that our natural reaction is to push away someone who shows that he CARES.
我开始想这是有多滑稽。我们最管用的魅力是拒绝，我们最本能的反应是推开那些表现出关心我们的人。
Expression of negative emotions is always mechanical, so it can never be useful, but resistance to it is conscious.
负面情绪的表达总是机械性的，所以永远也不可能有用，但是抵抗它却是有意识。
This lair conditionerk of resistance in very cold metwoulss may become useful in electronic computers.
这种在甚高温金属中没有电阻的景色可能对电子计算机很有用途。
The lack of resistance in very cold metals may become useful in electronic computer.
这种在超低温中的金属没有电阻，可能对电子计算机很有用处。
The batteries are at the end of their useful life, suffering from sulfation, high internal resistance, and drastically lowered storage capacity.
电池是在他们最后的使用寿命，从痛苦可用、高内部阻力，大幅度降低了存储容量。
Often eat mutton to improve people's physical quality and disease resistance is very useful.
常吃羊肉对提高人的身体素质及抗病能力十分有益。
The various factors influencing the friction resistance as well as the effects of these factors have been studied and tested, and some useful conclusions and data have been obtained.
对影响摩阻力的各种因素和这些因素的影响程度进行了试验，并得出一些有用的结果。
Thellos lack of resistance in very cold metals may become useful in electronic computers.
这类在甚低温金属中没有电阻的征象有可能对于电子计较机颇有效处。
RAPD analysis of genetic diversity would be useful in cross combination setting of breeding for high resistance to stem-nematode in sweetpotato.
遗传多态性的RAPD分析可为甘薯抗茎线虫病品种选育的亲本组配提供依据。
However, to be useful, they must be characterized for capacitance value, voltage rating, temperature coefficient, and leakage resistance.
然而，要使用电容器就必须明白其特性：包括电容值、额定电压值、温度系数以及泄漏电阻等。
All this have made a firm foundation for the gene engineering research of drought-resistance in plant and will be useful in producing trehalose by plant bioreactors.
这为植物抗旱基因工程的研究打下了良好的基础，同时也为利用植物生物反应器生产海藻糖奠定了基础。
Its fast drying time of approximately one second and good rub resistance are particularly useful for high-speed production lines.
其快速干燥大约一秒钟的时间，良好的耐磨性是特别有用的高速生产线。
The earthquake resistance measures taken in design and construction of tunnels are pointed out, which are useful for design, construction and strengthening of tunnels in seismic regions.
依据定性方法，指出了隧道设计、施工应注意采取的抗震措施，为工程师在地震区隧道的设计、施工、加固等方面提供参考依据。
Although not a precision instrument, the ohmmeter is a useful device for rapid measurement of resistance.
欧姆计是一种很有用的仪表，可以用来迅速地测量电阻，尽管它不是一种精密仪表。
Decreasing the heat flux or outlet two-phase resistance, and increasing the system pressure or inlet single-phase resistance are useful to avoid the natural circulation flow instability.
增大系统压力、减小热流密度、增加入口单相阻力、减小出口两相阻力有利于避免自然循环流量漂移的发生。
This study was not only useful for the structure design of epothilone, but also provided a novel insight into the deeper mechanism of drug resistance.
本试验的研究成果为进一步改造埃博霉素和更加深入的研究抗耐药机制提供了理论指导和铺垫。
The pharmaceutical composition useful in this invention comprises a P2Y receptor agonist with enhanced resistance to extracellular hydrolysis, such as dinucleoside polyphosphate compounds.
所述对本发明有效的药物组合物含有对胞外水解有增强抗性的P2Y受体激动药，如二核苷酸多磷酸化合物。
This combination is endowed with a synergistic effect and is useful in the treatment of disease forms due to insulin resistance and in cardiovascular diseases.
该组合具有协同作用，且可用于治疗由胰岛素抵抗造成的疾病形式和心血管疾病。
Our work give a quantitive demonstration to the recent experimental data, and these results are useful to the further study of resistance property with magnetic field.
对新近实验观测，给出了定量的解释，为进一步研究体系在磁场调制下的自旋极化载流子的输运行为打下了基础。
The resistance of elements increases gradually during their useful life.
该产品的电阻值在其有效使用期限内，阻值是逐渐变大。
Some application examples in practice showed that this system is adaptive and effective to can-body resistance welding machine, thus useful for fault diagnosis of can-body resistance wel…
运行实践表明，该系统知识模型适应性好，推理结果基本符合实际情况，有助于罐身电阻焊机的远程快速故障诊断。
After analysing the human body's resistance in detail, the secure current values were put forward, and the useful basis for secure voltage under various conditions was provided.
较详尽地分析了在不同状态下的人体电阻值，为各种条件下的安全电压值提供了依据。
Water weights, floating belts, and other useful equipment are used to increase water resistance as well as help with flotation and balance.
水的重量、浮具还有其它一些可用器材，都可用来增加水的阻力，除此之外，这些器材还要能为人体提供浮力及维持人体平衡。
High strength and excellent corrosion resistance make BPS 46-701-1146 Stainless Steel useful for a wide variety of applications. Such as the conveyor belts.
高强度和良好的耐腐蚀性能，使基点46 - 701 - 1146不锈钢有益的多种应用。如传送带。
Molecular marker assisted selection was regarded as a useful tool for breeding for drought resistance in crops.
分子标记辅助选择育种给作物抗旱育种提供了新的途径。
Some of the useful properties of ceramics and glasses include high melting temperature, low density, high strength, stiffness, hardness, wear resistance, and corrosion resistance.
高熔点、低密度、高强度、高刚性、高硬度、高耐磨性和抗腐蚀性是陶瓷和玻璃的一些有用特性。
Phase transformation behavior obtained from CCT curves provides useful instructions for the heat treatment process. Wear-resistance of multicomponent white irons used for hot rolling...
从连续冷却转变图获得的相转变行为对热处理过程提供了有用的指导。
Phase transformation behavior obtained from CCT curves provides useful instructions for the heat treatment process. Wear-resistance of multicomponent white irons used for hot rolling...
从连续冷却转变图获得的相转变行为对热处理过程提供了有用的指导。
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