Being a crucial factor in influencing the performance of Full Face Rock Tunnel Boring Machine (TBM), the cutterhead design is one of the key issues of TBM.

刀盘设计是全断面岩石隧道掘进机(TBM)的设计关键，是影响其掘进性能的决定性因素。

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The ultrasonic attenuation character in the rock is usually expressed by rock absorbability quality factor (q).

超声波在岩石中的衰减特征通常用岩石吸收品质因子(Q值)来表征。

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Selective catalysis of different clay minerals within source rock is the most important factor of affecting hydrocarbon composition.

烃源岩不同粘土矿物的选择性催化特征是影响油气组成的最重要因素。

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"There are bands out there that I'm confident are going to break through, but I do feel that the greats - those big rock 'n' roll bands that have this great big following and dominate the market - are a factor of yesteryear, sadly, " she says.

BBC: Can Manchester music move on from its past?