这项研究只是询问了很小一部分人在很多年前的生活习惯，这使得它的可靠性降低。
This is a fairly small study which relied on asking people about their behaviour years ago, which can make it less reliable.
整流二极管不可直接并联使用，因为二极管的热电阻有差异，会使可靠性降低，最好用一组电流大的二极管。
Rectifier diodes cannot be used directly in parallel, because the diode heat resistance have differences, will reduce the reliability, it is better to a set of current of diode.
新技术的改进包括高压涡轮机翼，可提高其作战的可靠性、降低维修成本并提高燃油燃烧使用率。
The new improved technology includes high pressure turbine airfoil advancements that enhance operational reliability, lower maintenance costs and improve fuel burn retention.
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