您要查找的是不是：
- Keywords subsidence trough;barycentric coordinates;effect transference angle;analytic method; 下沉盆地;重心坐标;影响传播角;解析方法;
- The coordinates of the centre point of a subsidence trough are calculated by the effect transference angle and the mining depth. 利用平面图形几何重心公式计算回采工作面水平投影图形的重心坐标，然后根据影响传播角和开采深度计算下沉盆地中心位置的坐标。
- Keywords subsidence land;reclaiming;fly ash;sewage sludge;distillers' grains; 沉陷地;复垦;粉煤灰;污泥;酒糟;
- Keywords subsidence area in coalfield;recultivation;Jiawang coal mine; 采煤塌陷地;复垦;贾汪矿区;
- subsidence trough 下沉凹槽
- Keywords subsidence area;empty region of mine;ecotypic city;steeply inclined coal seam; 塌陷区;采空区;生态城市;急倾斜煤层;
- Keywords subsidence land in coal mining area;classification;continuable utilization; 采煤沉陷土地;分类;持续利用;
- Keywords subside seeper area;aquatic envi ronment;dominant species; 塌陷积水区;水生态环境;优势种;
- Keywords subsiding speed;experiment;photosensitive component.; 沉降速度;试验;光敏元件;
- Keywords subsiding;forming condition;surroundings effects;measures; 采空塌陷;影响因素;环境影响;防治措施;
- Keywords: GPRS; GPS; GIS; Protocol; Design?? 关键词：通用分组无线业务；全球定位系统；地理信息系统；协议；设计??
- subside trough 沉降槽
- Make bulk changes to keywords, ads, and ad groups. 批量更改关键字、广告和广告组。
- Some keywords in SQL are also reserved words. SQL中的一些关键字也是保留字。
- Are reserved keywords in Office projects. 是Office项目中的保留关键字。
- Click the Keywords button at the top of the window. 点按窗口顶部的“关键词”按钮。
- Mention your keywords inside the meta tags. 梅塔内提你主题词标识。
- Reserved keywords in the Remarks section. 之后的保留关键字。
- Keywords: Important words, search index. 关键字：重要字，供索引查。
- Keywords: Low power testing, BIST. 关键词：低功率测试、自我测试技术。
