Simulation method of directional drilling course was discussed under limited survey point data, and the reliability of simulation method was analyzed with cases.
在测点数据有限的情况下,探讨定向钻孔轨迹的模拟方法,并通过实例分析模拟方法的可靠性。
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It has also discussed the characteristic of control survey of non-directional traverse in urban buildings and concealing terrains and pointed out the practical value and problems of this method.
Objective: to survey the toxicity and the effect on immunity function of fungal fermentative products in Tripterygium Wilfordii Hook by a novel bi-directional solid-state fungal fermentation.