Without calculation, the method can determine the order of the fringes in real time. It has practical significance when it is used to measure the curvature and slope and to im-prove the system.
本方法具有不必经过计算，实时确定条纹级数的优点，对于曲率和斜率测量方法和系统的完善具有实际意义。
The underwater welding using a water jet curtain to prevent the damaging effect of water on arc and weld is a practical way to im- prove the"wet"weld quality.
利用水射流的屏蔽作用，消除水对电弧和焊缝的不利影响，是提高水下湿法焊缝质量的一种有效方法。
It is very practical or im-mediate significance to develop the study on systems engineering of rye.
开展黑小麦的系统工程研究，在我国具有很大的现实意义。
It is very practical or im-mediate significance to develop the study on systems engineering of rye.
开展黑小麦的系统工程研究，在我国具有很大的现实意义。
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