Application of PLC in improvement of steel cable pull rubber belt conveyer

The steel cable belt conveyer of Xie Zhuang Coal mine is transformed successfully in June, 1998 by numeral control instead of the inductor-controlled rectifying device.

协庄矿钢丝绳带式输送机，于1998年6月进行了数控改造。

The paper introduces chiefly the design of cable conveyer along with the knowledge and suggestions of author.

主要介绍缆索吊机设计，以及笔者的体会和建议。

The circuits are composed by the symmetrical flipped voltage follower and the class AB SI memory cell, with the input circuit introduces current conveyance and the output adopts a cascode.

电路由对称的电压反转跟随器和Class AB SI存储单元组成，输入级采用电流传输器和输出级采用可调共源共栅结构。

A nonlinear programming model for optimizing profile cross section of lined water conveyance canal is presented in this paper.

采用非线性模型，推荐田间混凝土衬砌渠道纵横断面的优化设计方法，且可节省大量投资。

Optimizing Profile cross Section of Lined Water Conveyance canal

衬砌配水渠道最优纵横断面优化设计

Multi-objective and multiple fuzzy optimization of sluice scheme in north conveyance canal head

北引渠首泄洪闸方案的多目标多级模糊优选

Recharge ability analysis to riverside well field by water conveyance canal of reservoir downstream

水库输水河道对下游近河地下水源地补给能力分析

Design of strengthening for water conveyance canal of a reservior

某水库输水隧洞加固设计

Analysis on the synthetic experimentation of testing and calculating design depth in conveyance canal

输水渠道横断面设计水深测试及计算（综合性）实验

Power station set and water conveyance canal steel structure connection parameter

电站机组与输水隧洞钢结构连接参数分析

The quasi-convexity in Banach space

Banach空间的亚凸性

Convex modulus depicted overall degree of convexity of the unit sphere of spaces. It was very different for degree of convexity of each point that it would produce very great influence on the whole feature of the spaces.

凸性模刻划了空间单位球面的总体凸性程度，但是每一点的凸性程度都有很大的不同，这将会对空间的整体性质产生很大影响。

Crystal growth velocity increased gradually followed by the decrease of heating temperature. When heating temperature was closer to crystallization temperature, rate of change of crystal growth velocity was more drastic, temperature gradient and the convexity ratio of solid-liquid interface decreased.

随加热温度的降低，晶体生长速率逐渐增大，加热温度愈接近结晶温度，晶体生长速率变化率就愈剧烈；界面凸出率及晶体/熔体中温度梯度随之减小。

Results showed that growth velocity decreased gradually and temperature gradient in crystal/ melt and the convexity ratio of solid-liquid interface increased followed by the increase of heat dissipation ability of the thermal exchanger.

结果表明：随热交换器散热能力的增加，晶体生长速率逐渐减小，晶体/熔体中温度梯度、固液界面凸出率随之增大。

This kind of landslides mainly distributes in the linear-shaped bank slope, and secondly, in convex and Ladder-shaped bank slope. The concave shape at the present stage is relatively stable, so the landslide hazards are infrequent.

该类滑坡主要分布在直线形岸坡内，其次多分布于凸形岸坡和阶梯形岸坡中，凹形岸坡在现阶段相对比较稳定，滑坡灾害较少。

Located in hillside memorial space is a combination of concave and convex slope terrain slope, through finishing design platform type of memorial space, plant disposition to continue and emphasizes the landscape axis oriented.

位于山坡的纪念空间主要是结合凹坡和凸坡，通过地形整理设计台地式的纪念空间，植物配置以延续和强调景观轴线为主。

This article expounded the effect of the riverbed evolution of Zhenjiang-Yangzhou section of the Changjiang River over the past century on Zhenjiang port which used to be a deepwater harbour with concave bank and has been developed into a completely dredged port with convex bank.

本文阐述了长江镇扬河段近百年来河床演变对镇江港的影响，镇江港由凹岸的深水良港，演变为凸岸的挖入式港池；

Under the all different structures' combination, the water surface had large bias and turn-around in the torturous path, and in the middle of the path along the longitude, there had the regularity that sink bank surface was higher than the convex bank one.

在所有结构组合条件下，弯道水面都有较大偏斜和扭曲，并且在弯道中部主法线方向上，基本为凹岸水面高凸岸水面低的规律。

The results showed: As long as taking reasonable measures, we can guarantee the water inlet of convex bank fetch top layer clear water to ensure hydraulic power station work in good condition.

结果表明：只要采取合理的工程措施，就能保证凸岸取水口取到表层清水，保证水电站的良好运行。

When curved channel flow made curve motion, spiral flow was formed which was just fundamental reason for concave bank erosion and convex bank sedimentation in bend.

弯道水流在做曲线运动时形成螺旋流，而它正是弯道凹岸冲刷和凸岸淤积的根本原因。