查询词典 seam set

The methods of adaptive median filter, variance ratio of interclass and intraclass segmentation, and mathematical morphology were used to decrease the noise of original welded seam image, to extract welded seam region, and to carry on high frequency enhancement transformation for the interior of extracted welded seam with frequency range sharpening.

利用自适应中值滤波方法和类间、类内方差比分割法及数学形态学方法对原始焊缝图像进行降噪和提取焊缝区域，并对提取的焊缝内部进行频域锐化的高频加强变换。

Simulation results indicated that the adaptive median filtering effectively removes noise, and maintain the details of welded seam and defection edge; the variance ratio of interclass and intraclass segmentation could accurately distinguished between the welded seam metal and the base metal together with mathematical morphology method; high frequency enhancement extrudes the welded seam center, consequently defects would be detected.

仿真结果表明自适应中值滤波能够有效去除噪声，并保持焊缝和缺陷的边缘细节；类间、类内方差比分割方法与数学形态学方法并用，能准确的将图像分割为焊缝与母材区域；高频加强变换能够使焊缝中心部位突显出来，从而实现缺陷的检测。

The steeply dipping seam refers to the coal seam that the declining angle is between 35°and 55°. It is an important part in strip mining research to decide the reasonable width ofsteeply dipping seam strip coal pillar under village.

大倾角煤层是指煤层倾角在35°～55°之间的煤层，村庄下大倾角煤层条带开采煤柱尺寸的合理留设问题是条带开采研究领域中的一个重要组成部分。

After the seam has been stitched, trimmed, and graded, turn the facing to the inside and edge stitched, trimmed, and graded, turn the facing to the inside and edge stitch along the seam line, attaching the facing to seam allowance.

缉缝缝线并发层修剪后，把挂面翻到衣服里面，沿着缝线用倒钩针把挂面敷在衣片的缝份上。

It was shown that coal seam floor failure depth of working face 2121 was 32.5 to 5 m, approximately three times as deep as that of shallow working face(in genera l,9.15 to 12.0 m). Coal seam floor failure depth increased with mining depth. Potential risk of water inrush through coal seam floor of working face 2121 is much higher for deep mining than for shallow mining.

试验结果表明：该工作面底板破坏深度为32.5~35 m，比300 m采深以内的工作面实测深度(9.15~ 12.0 m)增加2倍以上，说明随着开采深度的增加，煤层底板采动破坏深度呈明显增大的趋势，因此，在水压和破坏深度二者同时增加的条件下，2121工作面深部煤层开采的突水危险性远远大于浅部煤层。

At last, the rational mining method is determined as the staggered layout of coalface in the upper and the lower coal seam, with the upper coal seam is mined first and the lower coal seam is mined with the whole height.

计算机数值模拟与现场实践表明，7煤与9煤的工作面成交错布置方式，先采7煤后采9煤，一次采全高，最有利于9煤工作面的顶煤冒放，保证9煤综放开采的成功。

And it is concluded that the No.4-2coal seam is a mid-reserve and low-permeable seam, with surrounding rocks having low enclosed system and high permeability. And the coal seam's gas content is low, while its quantity in the roof-sandstone which is the main source of coalface's gas emission is high . The quantitative index used to analyze gas content and gas emission amount are pointed out systematically. And gray association analysis method is adopted to search the main factors affecting coal-bed content and gas emission amount.

系统提出了分析影响煤层瓦斯含量与采面瓦斯涌出量大小的量化因素指标，并将灰色关联分析原理引入煤层瓦斯含量与瓦斯涌出量主控因素的研究中，筛选出了煤层顶板含油指数，顶板砂泥岩比、4-2号煤层顶板以上煤系厚度3个因素指标为影响4-2号煤层瓦斯含量的主控地质因素；煤层埋藏深度，煤层瓦斯含量，煤层顶板含油气砂岩厚度，煤层顶板含油强度及工作面回采进度5个因素为影响综采面瓦斯涌出量的主控因素。

For an abitrary set X, appropriate order relations on WCL (the set of all weak closure operators), WIN (the set of all weak interior operators), WOU (the set of all weak exterior operators), WB (the set of all weak boundary operators), WD (the set of all weak derived operators), WD*(the set of all weak difference derived operators), WR (the set of all weak remote neighborhood system operators) and WN (the set of all weak neighborhood system operators) can be defined respectively, which make WCL, WIN, WOU, WB, WD, WD*, WR and WN to be complete lattices that are ismorphic to CS(X,CS is the set of all closure systems on X.

证明了可以在WCL(X上的弱闭包算子的全体)、 WIN(X上的弱内部算子的全体)、 WOU (X上的弱外部算子的全体)、 WB (X上的弱边界算子的全体)、WD、 WD*(X上的弱差导算子的全体)、 WR(X上的弱远域系算子的全体)和WN(X上的弱邻域系算子的全体)上定义适当的序关系，使它们成为与CS(X，〖JX-*5[JX*5]同构的完备格其中CS(X是给定集合X上的闭包系统的全体。

A set is "less than" another set if and only if the first set is a proper subset of the second set, and a set is "greater than" another set if and only if the first set is a proper superset of the second set.

只有当第一个集合是第二个集合的严格子集时，我们才称第一个集合"小于"第二个集合，同理，只有当第一个集合是第二个集合的严格超集时，我们才称第一个集合"大于"第二个集合。

To declare what we can do with a set, we start a header file Set.h:#ifndef SET_H #define SET_H extern const void * Set; void * add (void * set, const void * element); void * find (const void * set, const void * element); void * drop (void * set, const void * element); int contains (const void * set, const void * element);#endif The preprocessor statements protect the declarations: no matter how many times we include Set.h, the C compiler only sees the declarations once.

宣布我们能做些什么用一套，我们开始一个头文件Set.h ：＃ ifndef SET_H ＃定义SET_H 外部构造无效*设置；无效*地址（无效*一套，无效*常量元素）；无效*找到（常量无效*一套，无效*常量元素）；无效*下降（无效*一套，无效*常量元素）；国际载（常量无效*一套，无效*常量元素）；＃ endif 预报表保护声明：无论多少次我们包括Set.h ， C编译器将只看到申报一次。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。