不幸的是，由于缺乏某些调整压缩比的专门方法，这样的引擎如果燃烧汽油的话会立刻四分五裂。
Unfortunately, without some special means for altering the compression ratio, such engines would quickly disintegrate if fuelled with petrol.
体外预应力技术作为一种行之有效的加固手段，能够大幅度的改善和调整原结构的受力，提高结构的强度和抗裂性。
Prestressing reinforcement technology as an effective means to greatly improve and adjust the original structure of the force, the strength and commitment to improve crack resistance.
它为压裂的优化设计以及注水开发井网的调整和完善，提供了新的思路和方法。
It has provided new thought and method for the optimizing design of fracturing and for the adjustment and perfection of water flood development well pattern.
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