中国企业对页岩气的兴趣也很强烈，国企将宝押在有名望的生产商上，尽量多的买进美国的专业开采技术。
Chinese interest in shale gas is strong, with state companies buying up American expertise as they take stakes in established shale-gas producers.
合理的开采设计应尽量避免和解除应力的高度集中和发生因应力升高而引起的危险。
The reasonable mining design should avoid and relieve the stress as far as possible the high degree of concentration.
合理的开采设计应尽量避免和解除应力的高度集中和发生因应力升高而引起的危险。
The reasonable mining design should avoid and relieve the stress as far as possible the high degree of concentration and has because the stress to elevate the danger which causes.
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