杂交及冲洗在计算机控制下自动完成，避免了人工干预以及环境变化所造成的误差。
Crossing and cleaning are completed automatic in computer controlling and the error introduced by decision-maker and condition changing is avoided.
论述了水井井周渗透性降低的原因，从钻井方法、冲洗液性能、建立人工过滤层、洗井等方面探讨了改善渗透性的措施。
Measures to improve perrne- ability reduction are discussed in terms of the drilling method, fluid properties, artificial infiltration layer, and well flushing, etc.
目的探讨不同冲洗液冲洗对人工关节置换术后感染的预防作用。
Objective to evaluate the effect of intraoperative irrigation with different solutions on prevention of postoperative infection after joint replacement.
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