The genetic modification does not appear to weaken the plants, and the transformation may have turned them into more efficient sources of ethanol.
基因改造并没有使植物变弱，这一转化可以使其变为乙醇生产中更有效的原料。
The technology of surface modification was an efficient way to increase fatigue life of the mainshaft bearing of the aircraft engines.
表面改性处理技术是一种提高航空发动机主轴轴承疲劳寿命的有效途径。
The running condition of rectifier before and after modification was compared. Methods to realize stable and efficient running of rectifier were discussed.
对比改造前、后整流机组的运行情况，阐述如何实现整流机组平稳与高效运行。
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