The use of rechargeable battery charging to the valve, fluid flow of the energy supplement for battery power.

利用充电蓄电池向阀门充电，流体流动产生的能量可为蓄电池补充电。

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Reservoir wettability is an important parameter for evaluating recoverable reserves and controlling fluid flow of a oil reservoir.

油藏润湿性是评估油藏可采储量，控制油藏流体流动行为的一个重要参数。

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Finally, the fluid flow of the weld pool was taken into account by increasing the heat conduction coefficient at elevated temperature.

最后采用增大热传导系数的方法，考虑了熔池内流体流动对整个温度场的影响。

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Inside the riser pipe is a space about half a meter in diameter, large enough to hold the spinning drill pipe and bit and to allow the return flow of drilling fluid.

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At that depth stopping the flow with a deadweight of drilling fluid should create few problems, once the exceedingly difficult challenge of hitting the well is met.

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