1) pitch line differential
节顶距
2) pitch-cone apex to crown distance
节锥顶到齿冠的距离
3) zenith distance
顶距
1.
just by pressing a button without the sea horizon to turn to,we should know clearly the relationship between the accuracy of zenith distance observed and the accuracy of a position fixed,the causes of the errors of zenith distance observed,what accuracy of zenith distance observed could be obtained and what accuracy standard should be used.
要在无水天线测天时一按按钮就可定出较精确的船位经纬度,必须弄清天体顶距测量精度对定位精度的影响,弄清顶距测量误差产生的原因,可达到的精度及选用适当的精度标准。
2.
The paper expounds the principle and the method of measuring zenith distance for celestial positioning based on the direction of gravitational force line.
论述了在海上进行天文定位时以重力线作基准直接测定天体顶距的原理和方法。
4) apex distance
顶距
1.
The pipe driving construction method characteristics,pipe material choice,pipe driving force calculation and apex distance determination,working pit and receiving pit selection and size determination were analyzed.
对顶管施工方法工艺的特点、管材选择、顶力计算和顶距确定、工作坑和接收坑选用及尺寸确定等方面进行了分析,并提出了顶管法施工应注意的一些事项,以推广顶管技术的应用。
5) Pitch
[英][pɪtʃ] [美][pɪtʃ]
节距
1.
Tolerance of Chain Contact Pitch and Chain Length in the New Edaphic and Mineral Chain Ditcher;
刀式矿土复合型链条接触节距及链长公差的研究
2.
The formulas concern two kind of saw chains with same pitch and different pitch and three kind of sprockets,which are rim sprocket,spur sprocket and nose sprocket.
这套公式涉及了等节距锯链和不等节距锯链两种情况，还涉及星形驱动链轮、轮辋式驱动链轮和星形导向链轮三种链轮。
3.
Based on study and precision analyses on the outer diameter and pitch measure of the synchronization belt-wheels,the paper considers that standard offset can be measured only by using ordinary tools and effective and dependable result obtained.
对同步带轮的外径和节距的测量进行了研究和精度分析,提出仅使用通用量具即可实现标准规定偏差的检验,并能得到有效可靠的结果。
6) chordal pitch
弦节距节距
补充资料：胎面花纹节距
分子式：
CAS号：
性质：沿胎面中心线，一个完整胎面花纹的循环单元长度。在胎面上测得轮胎的一侧相邻两花纹块前侧面之间的间隔即谓之胎面花纹节距。分为等节距和不等节距两种，前者模具加工制造简单，但轮胎易产生行驶噪音；后者模具加工制造较为复杂，但轮胎行驶噪音较低。高速行驶的轮胎通常采用不等节距花纹。
CAS号：
性质：沿胎面中心线，一个完整胎面花纹的循环单元长度。在胎面上测得轮胎的一侧相邻两花纹块前侧面之间的间隔即谓之胎面花纹节距。分为等节距和不等节距两种，前者模具加工制造简单，但轮胎易产生行驶噪音；后者模具加工制造较为复杂，但轮胎行驶噪音较低。高速行驶的轮胎通常采用不等节距花纹。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条