经过多次试验，这个新的种植法对我们这个地区似乎都适用。
Tested many times, the new method of cultivation seems to hold good for our area.
于是，他经过多次试验，终于发明了锋利的锯子，大大提高了工效。
Therefore, he After repeated tests, and finally invented a sharp saw, greatly improving the ergonomics.
经过多次试验证明，该方法判断汽车短路故障点的正确率接近100%。
The many tests show that using this method to judge automotive short circuit trouble point is approximately 100 % accuracy.
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