在各种承载部位，在不改变其应力分布的前提下开设减重孔，利用去除材料来达到减重的目的。
Without changing stress distribution, holes are dug in bearing the weight of positions by wiped off material in order to decrease weight.
为了提高纸靶重孔的测量准确性，提出一种基于图像减影技术的重孔识别方法。
In order to improve the accuracy of the measurement of superposition hole, an approximate solution based on image subtraction technique to identify the superposition holes was put forward.
为了提高纸靶重孔的测量准确性，提出一种基于图像减影技术的重孔识别方法。
In order to improve the accuracy of the measurement of superposition hole, an approximate solution based on image subtraction technique to identify the superposition holes was put forward.
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