... 反复多次检查 Repeated Checking 通过反复多次试验 Through Repeated Tests 这样反复多次 This Repeatedly ...
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The good composition of liquid membrane can be explored only through repeated tests.
液膜的良好配方只有通过大量试验去探讨。
Since 1990 through repeated tests by trial and error, two feasible control methods, have been raised and gradually perfected, namely method of using plugging agents and that of using packers.
从1990年开始，通过反复的摸索和试验，提出并逐渐完善了两种切实可行的治理方法，即封堵剂法和封隔器法。
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