根据能量守衡原理和钻头破岩机理，建立了地层岩性与钻头工况评估模型。
According to the conservation principle of energy and the rock-breaking mechanism of bit, the assessment model was set up for formation lithology and the working condition of bit.
利用微差井温确定原始地层的导热系数，基于能量守衡（地热流密度相等）这一原理。
The principle of determining thermal conductive factor of original formation through microdifference temperature is conservation of energy(equal density of geothermal heat flow).
本文根据质量守衡、能量守衡、动量守衡原理，建立了房间空调器绝热毛细管的分布参数模型。
In this paper, a distributed parameter model of room air-conditioner adiabatic capillary was developed, on the basis of mass-energy conservation and momentum conservation.
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