The gear tooth micrometers can be used to measure the gear tooth . they are a universal measuring tool 详细说明：公法线千分尺用于测量齿轮公法线长度，是一种通用的齿轮测量工具。
A company ' s can increase the its business in the following four ways : widening its product mix , lengthening its product mix , and pursuing more or less product line consistency 企业扩大其业务规模有四种可选方式：拓宽产品组合，扩展产品线长度，加强产品组合深度，加强或减弱产品线的相关性。
Abstract : calculation of the length of contact lines of a double enveloping wormgearing with planar generating surface and finding out the size of contact area are th e foundation of strength analyses of wormgearing 文摘:计算平面二次包络环面蜗杆副的接触线长度和了解蜗轮齿面接触区域的大小是蜗杆传动强度分析的基础。
Abstract : the measurement of asymmetric gear is discussed , especially the measurement of base tan - gent length of this kind of gear is studied in details . the formula of measuring and calculating the base tangent length and the number of tooth - jump are deduced in order to use in real production 文摘:就非对称齿轮的测量问题进行探讨，特别是公法线长度测量进行详细研究，并推导出计算公式和跨齿数，以便于以后在生产上使用
In the rotor design , it makes a detailed calculation for all the geometry feature parameters including geometry dimensions , contact line length , blowhole area and flow cross - section area and the thermodynamic feature parameters such as cooling capacity , shaft power and so on 在转子设计方面，对全部几何特性参数，包括几何尺寸、接触线长度、泄漏三角形面积和面积利用系数等以及包括制冷量、轴功率等冷水机组热力特性参数进行了详细计算。
Based on the fact of driven gear moving prior to normal locality when driving gear pair moving from upper dead center to lower dead center , considering all influential elements , the maximum backlash of gear pair can be controlled to satisfy the special driving requirement through controlling the length and deviation of its common normal without increasing its manufacture precision 摘要根据换向传动齿轮副从上止点向下止点运动时被动齿轮运动超前的实际，从影响齿轮副侧隙的各种因素出发，在不提高齿轮副制造精度的前提下，通过拉制齿轮副公法线长度及其偏差从而有效地控制齿轮副的最大齿侧间隙，以满足传动的特殊要求。
After contrasting and analyzing the two common used measure method of discontinuity , a modified method that is elaborate method of joint surveying is put forward for the first time . rational method to get spacing of joints is researched utilizing lots of statistical results . according to the theory of minimal valid length of scanline , 5m is chose as appropriate statistical section length to obtain the successive values of those indices indicating rock mass structure , they are spacing , number and total length of joint 本文在对比分析目前两种常用的结构面测量方法优缺点基础上，首次提出了一种改进的结构面测量方法?节理详细精测法，并利用大量的统计结果，研究合理的间距取值方法，根据间距无偏差测量的最小有效测线长度理论，选择5m作为统计区间长度，获得了节理间距、条数、总长度随洞深的连续变化值。
Tide is the primary dynamic factor in building tidal flat ; it must be affect tidal creek system on mud flat . therefore , based on the raster image of the year of 2000 , the thesis has built correlation equations between average tidal ranges and the density of tidal creeks , the ratio of the width of outlet to the length of low tidal shore , the ratio of the area of tidal creek to tidal basin respectively . the result shows that the former is high well - marked correlation ; the two latter are well - marked correlation 潮汐是塑造潮滩的主要动力因素，它必然与淤泥质潮滩上潮沟系统的发育有密切的关系，为此，本文以2000年的卫片作底图，对潮沟系的密度、沟口宽度占低潮线长度的比值以及潮沟面积与潮盆面积的比值，分别与平均潮差建立了相关关系，结果发现，潮沟系的密度与平均潮差之间存在着高度显著的相关性，沟口宽度占低潮线长度的比值和潮沟面积与潮盆面积的比值与平均潮差之间存在着显著的相关性。
Abstract : the curve equation , force calculation and the length of suspension in two conditions of suspended cable are given through the strict derivation using mathematical and mechanical method . the two conditions were the weight of suspension uniformly disturbed along the link and suspension line . the applications are given and the common expressions have some applied value in engineering 文摘:通过数学、力学推导，给出了悬索自重沿弦线(悬挂点连线)及沿索线均匀分布两种情况下的悬索曲线方程、受力计算及索线长度，并给出了工程应用实例，所得结论和公式具有一定的工程应用价值
In this paper , the relation between differential driven ratio accuracy and the common normal length error of cylindrical bevel wheel has been found by experimental method , which provides a efficient way for cylindrical bevel wheel manufacturer to control the common normal length error of the wheel 摘要通过实验研究，寻找出差动传动比的精度与斜齿圆柱齿轮的公法线长度误差的关系，从而为斜齿圆柱齿轮的加工提供一个可以控制斜齿圆柱齿轮公发线长度误差的有效方法。
