field time break 中文意思是什麼
field time break
解釋
現場起爆信號-
As crude oil is extracted continuously in oil field, there are more and more low yield oil wells in old oil field, and the problem of void pumping is becoming more serious. rational control of the pump ' s work and rest time can save electricity, prevent the break of beam hanger caused by beating liquid, and reduce attrition of the pump
隨著油田原油的不斷開采，老油田的低產井越來越多，油井空抽現象也越來越嚴重，合理地控制抽油機的開機時間與停機時間長度，可以達到節電、防止擊液引起的油桿斷裂以及抽油機磨損減少的目的。 -
The authors established an initial velocity model based on the first break time of the actual data, then realized the forward calculation with the improved shortest path ray tracing algorithm, and applied the improved constrained damped simultaneous iterative reconstruction technique ( cdsirt ) to solve large - scale and sparse equations for inversing the near - surface velocity field
根據實際地震數據的初至波時間建立初始速度模型；採用改進的最短路徑射線追蹤演算法進行正演；利用改進的約束帶阻尼聯合迭代重建技術（ cdsirt ）求解大型、稀疏的方程組來反演近地表的速度場。 -
The results from the calculation and field experiments indicated that by using such type reamer, the machine could cut up straw and break the root of crop in the soil into pieces, and mix round them with soil at the same time
計算和田間試驗結果表明，該刀具作用於根茬時刀頭速度大，採用該刀具的還田機既可切碎秸稈，又能同時入土破茬，並實現了碎茬與土壤的均勻混拌。
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