auxiliary adit

This paper expounds the use of an auxiliary plane in seeking the point of intersection between a straight line and a plane,using a comparative analytical method.

采用对比法对辅助平面在求一般位置的线面交点中的作用进行了论述 。

Utilize auxiliary plane to solve the following problem: the point of intersection of lines, equation of the straight line, equation of the plane and the distance between lines in different planes.

利用构造辅助平面方法求:直线与直线交点;平面方程;直线方程;异面直线间距离。

a tunnel horizontal to the surface leading to a mine is called an adit. There are also vertical shafts at right angle to the surface and inclined or slope shafts at another angle to the surface.

与地表平行通向井下的坑道是平峒。还有与地表成直角的竖井，与地表成一定角度的斜井。

In indined or horizontal shafts, conveyer belts are frequently used for this purpose. at the bottom of the shaft is a sump, a pit which collects water.

在斜井和平峒中，常用带式运输机来完成这个工作。井底有一个水仓，用来集水。

Building Digital Kongdong: Informatization in Kongdong District of Pingliang City

建设"数字化"的新崆峒--平凉市崆峒区信息化发展概况

DISCUSSION ON GEOLOGICAL AGE OF KONGTONGSHAN CONGLOMERATE IN PINGLIANG CITY,GANSU PROVINCE

甘肃平凉“崆峒山砾岩”地层时代的商榷

Research about Hainan Li-Dong with Other Social Organization;

海南黎峒与相关社会组织的关系研究

Harmonious Chatong,Unique Thought;

和谐的茶峒 别样的思考——重读《边城》

Dong-bandits in Mountain Area of South China in the Song Dynasty: Those in South Jiangxi;

宋代南方山区的“峒寇”——以江西赣南为例

The Application of Contingent Valuation Method In Evaluating Non-Use Values of Kongtong Mountain

CVM在崆峒山非使用价值评估中的应用

A Consideration on Industrialization of Duntsa Tea

关于“城步峒茶”产业化发展的思考

Design and Construction of Large Section Driving Chamber in Blind Belt Slope

皮带暗井大断面驱动峒室设计与施工

The Floatation Adjusted and Controlled at Electric Potential is Studied on Galena-lead Sulphide and Sphalerite-zinc Sulphide in Qiandongshan;

电位调控浮选在铅峒山铅锌矿的应用研究

Achievements made in second Loess Plateau Watershed Rehabilitation Project in Kongdong district project area;

崆峒区世行二期项目建设的成效与启示

MATERIALIZATION OF THE LEGEND “YELLOW EMPEROR ASKING THE WAY” AND CULTURAL SIGHTS IN KONGTONG MOUNTAIN;

「黄帝问道」的现实化与崆峒山的文化景观

Application of Controlled Blasting Technology on Signal ChamberConstruction underground;

控制爆破技术在地下大断面峒室施工中的应用

Research on function of the Folkbelief of Tula--Taking the Laxidong Village for Example;

土家族民间信仰的功能研究——以拉西峒村为个案

On the Vicissitude of Folk Beliefs among the Tujia Nationality--Using Laxidong Village as a Case in Point;

土家族民间信仰的变迁——以拉西峒村为个案

A Study of the Tujia s belief in Tima--With Laxidong Village as an Example;

土家族梯玛信仰研究——以拉西峒村为个案

Development and Genetic Mechanism of the Kongtongshan Formation Conglomerate

“崆峒山组砾岩”形成演化的动力学机制分析