目的探求粗玻管的截割方法和破底大(中)试管在中学化学实验和大学基础化学实验中的利用。
Aim to find ways of cutting big glass tubes and new USES of big bottom-broken test tubes in high school chemical experiment and college basic chemical experiment.
介绍了采煤机大功率截割部加载试验的一种新的实现方法，同时阐述了加载试验的工作原理、主要组成部分和主要技术特点。
Introduced a new implementing method for loading cutting part with high power of shearer, and expound working theory of loading test, main components and main technical feature.
介绍一种截割头的设计方法，它能够准确、有效地实现截齿及齿座安装定位设计。
The paper introduces a design method of cutting-head, which can exactly, effectively carry out the attaching design of bits and bit-holders.
本论文的论题选自国家自然科学基金项目“采掘机械截割粉尘的成因及控制方法的研究”。
The proposition of the paper comes from a NSFC project - "Contributing Factorof Cutting Dust and Its Control Strategies".
在此基础上，确立了截割头的载荷模型及其模拟方法，并利用编制的计算机程序对截割头的随机载荷以及瞬时截割功率进行了模拟和分析。
On the basis of them , load models and simulation program of the cutting head are given , and the random loads and instantaneous cutting power are simulated and analysed.
阐述一种大型采掘机械模拟截割试验载荷的性质、测试数据处理的理论、步骤和结果。 介绍了动态测试的方法和所用的仪器。
The load properties and the principle, procedure and results of data processing for cutting simulation of large excavating machines is described.
采煤机截割部是一个复杂的多体系统，其负载特性非常复杂，采用传统的计算方法研究其动态特性非常困难。
The shearer's ranging arm is a multi-body system and the load characteristic is very complicated, so it brings many difficulties to research dynamic property with traditional computational method.
针对采煤机截割路径的规划问题，提出了粒子群三次样条优化的采煤机截割路径规划方法。
According to the cutting path planning problem of the coal shearer, the paper provided the particle swarm triple spline optimization for the cutting path planning method of the coal shearer.
针对采煤机截割路径的规划问题，提出了粒子群三次样条优化的采煤机截割路径规划方法。
According to the cutting path planning problem of the coal shearer, the paper provided the particle swarm triple spline optimization for the cutting path planning method of the coal shearer.
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