割

This design firstly fixed on design scheme and selected basic components, and besides, developed the reliability analysis of transmission system. The design of MG300/701-WD Shearer's cutting unit. It is made up of a gearbox and moderate breeze gear wheel transmission that the MG300/701-WD type mining machine cuts the cutting department, Cut the electrical machinery of cutting department and put to fix up horizontally in the rocker arm, The power that the motor outputs leans on a round of transmission of department of gear wheel and planet round via the tertiary straight tooth, Urge the cylinder to rotate finally.

本文首先确定了设计方案和选择了基本部件并开展了传动系统的可靠性分析，MG300/701-WD型采煤机截割部主要是由一个减速箱和四级齿轮传动组成，截割部电机放在摇臂内横向布置，电动机输出的动力经由三级直齿圆拄齿轮和行星轮系的传动，最后驱动滚筒旋转。

It is made up of a gearbox and moderate breeze gear wheel transmission that the MG400/900-3.3D type mining machine cuts the cutting department, cut the electrical machinery of cutting department and put to fix up horizontally in the rocker arm, the power that the motor outputs leans on a round of transmission of department of gear wheel and planet round via the tertiary straight tooth, urge the cylinder to rotate finally.

MG400/900-3.3D型采煤机截割部主要是由一个减速箱和四级齿轮传动组成，截割部电机放在摇臂内横向布置，电动机输出的动力经由三级直齿圆拄齿轮和行星轮系的传动，最后驱动滚筒旋转。

It is made up of a gearbox and moderate breeze gear wheel transmission that the MG250/591-WD type mining machine cuts the cutting department, cut the electrical machinery of cutting department and put to fix up horizontally in the rocker arm, the power that the motor outputs leans on a round of transmission of department of gear wheel and planet round via the tertiary straight tooth, urge the cylinder to rotate finally.

MG250/591-WD 型采煤机截割部设计主要是由一个减速箱和四级齿轮传动组成，截割部电机放在摇臂内横向布置，电动机输出的动力经由三级直齿圆拄齿轮和行星轮系的传动，最后驱动滚筒旋转。

It is made up of a moderate breeze gear wheel transmission that the MG400/920-WD type mining machine cuts the cutting department, cut the electrical machinery of cutting department and put to fix up horizontally in the rocker arm, the power that the motor outputs leans on a round of transmission of department of gear wheel and planet round via the tertiary straight tooth, urge the cylinder to rotate finally.

MG400/920-WD 型采煤机截割部主要是由四级齿轮传动组成，截割部电机放在摇臂内横向布置，电动机输出的动力经由三级直齿圆柱齿轮和一级行星轮系的传动，最后驱动滚筒旋转。

It is made up of a gearbox and moderate breeze gear wheel transmission that the MG200/456-AWD type mining machine cuts the cutting department, cut the electrical machinery of cutting department and put to fix up horizontally in the rocker arm, the power that the motor outputs leans on a round of transmission of department of gear wheel and planet round via the tertiary straight tooth, urge the cylinder to rotate finally.

MG200/456-AWD 型采煤机截割部主要是由一个减速箱和四级齿轮传动组成，截割部电机放在摇臂内横向布置，电动机输出的动力经由三级直齿圆拄齿轮和行星轮系的传动，最后驱动滚筒旋转。

Itis made up of a moderate breeze gear wheel transmission that theMG400/920-WD type mining machine cuts the cutting department, cutthe electrical machinery of cutting department and put to fix uphorizontally in the rocker arm, the power that the motor outputsleans on a round of transmission of department of gear wheel andplanet round via the tertiary straight tooth, urge the cylinder torotate finally.

MG400/920-WD 型采煤机截割部主要是由四级齿轮传动组成，截割部电机放在摇臂内横向布置，电动机输出的动力经由三级直齿圆柱齿轮和一级行星轮系的传动，最后驱动滚筒旋转。

Itis made up of a gearbox and moderate breeze gear wheel transmissionthat the MG400/900-3.3D type mining machine cuts the cuttingdepartment, cut the electrical machinery of cutting department andput to fix up horizontally in the rocker arm, the power that themotor outputs leans on a round of transmission of department ofgear wheel and planet round via the tertiary straight tooth, urgethe cylinder to rotate finally.

MG400/900-3.3D型采煤机截割部主要是由一个减速箱和四级齿轮传动组成，截割部电机放在摇臂内横向布置，电动机输出的动力经由三级直齿圆拄齿轮和行星轮系的传动，最后驱动滚筒旋转。

On k-terminal Cut Problem of-graph and 3-terminal Cut Problem of (n,n+1)-graph

论文标题：图的k-终端割与（n，n+1）图的3-终端割问题研究

It is shown that every minimum geodetic set of a graph does not contain its cut-vertices, and if G is a block graph with n≥3 vertices and k≥1 cut-vertices,then g=n-k.

图的每个最小测地集都不包括它的割点，如果图G是一个有n≥3个顶点，k≥1个割点的块图，那么g=n-k。

The intension of secateur for Nasturtium officinale has some effect on its uptake rate,thus the length of cut when harvesting should be less than 10 cm.

西洋菜收割时的剪割强度影响其氮磷吸收速率，每次剪割长度不得超过10 cm。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。