...有的细菌是有害的，有的是有益的 » Some bacteria are harmful, some beneficial 在建立的模型基础之上 » In the model based on 突然有种困惑，感觉到一点不安，我怕，怕自己这样没有安全感的感觉。
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现在建立的唯一一个模型并没有建立在公众资金的基础之上。
The only model that has ever been built wasn't built on public money.
在建立牙轮钻头与井底岩石互作用模型的基础之上，建立了基于钻柱和岩石互作用下的牙轮钻头横向振动动力学模型。
On the basis of the interaction model between formation and rock bit, a lateral vibration dynamic model of the rock bit was established under the interaction between drilling string and rocks.
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