1) relative heart rate

相对心率
1.
Discusses the change of heart rate when one exercise under the high work load, puts forward a method which applies the relative heart rate to judge limited physical work load, and concludes a formula about the maximum time which human body can keep when one work under the high work load.
详细分析了人体在高强度运动中的心率变化,提出了用相对心率为指标来衡量体力极限负荷的方法,并推导出人体在高强度运动下能维持的最大工作时间的数学表达式。
2) relative rate of partial core

相对偏心率
1.
In order to solve the leakage of the floating seal ring in a cyclic hydrogen compressor, we have analysed the ring structure and through a serial of calculations found the relations between the pressure, rotating speed and relative rate of partial core.
针对压缩机中浮环密封出现的泄漏,通过对浮环结构的分析和一系列计算,得出压力、转速与相对偏心率之间的关系,并对结构进行了改进,最终解决了这一技术难题。
3) malalignment

不对准;相对位偏;偏心率;轴线不对准
4) Relative instantaneous center of rotation

相对瞬心
5) relative efficiency

相对效率
1.
The relative efficiency of the least square estimation in singular linear model;

奇异线性模型最小二乘估计的相对效率
2.
Analyzing isotopic abundance by method of relative efficiency;

相对效率法同位素丰度分析的研究
3.
The relative efficiency of the least square estimation in singular linear model;

奇异线性模型中LSE的一种新的相对效率
6) relative curvature

相对曲率
1.
It is also analyzed that the parameters of initial pressure angle and its increment may influence the relative curvature at the meshing point to become zero.
介绍了微段渐开线齿条齿廓形成原理及形成过程,建立了微段渐开线齿条齿廓的直角坐标方程,证明了影响齿廓弯曲程度的参数是基圆半径,影响啮合点相对曲率为零的参数是初始压力角和压力角增量,提出了需对这些参数进行优化设计并给出了优化计算结果。
2.
If the relative curvature of a certain curve on the first control point and the direction angle of the first port’s tangent vector is given,here can get the whole curve by using the character of the port of quadratic uniform B-spline curve.
提出了一种二次均匀B样条插值曲线的构造方法,首先给定某一段曲线首点的相对曲率和该段曲线的首端切矢量的方向角,利用二次均匀B样条曲线的端点性质,求出其余各段曲线控制顶点,来生成整条插值曲线。
3.
In this article the authors first put forward a few simpler and easier methods for calculation the evolute equation, the formula of relative curvature; then, discuss the methods for calculating the equations of the tangent line, the normal plane, the osculating plane, the binormal, and the rectifying plane; and finally popu.
文中给出了有关渐缩线方程 ,相对曲率计算公式的更简便的推导 ;讨论了如何才能很快地做出切线 ,法面 ,密切平面 ,副法线和从切平面方程的方法 ;还对有的习题进行了推广 。
补充资料:瞬时心率
瞬时心率
beat to beat
指用胎儿心率记录器记录的两个心动周期范围内的变动。若两次心跳间隔0.5秒,则换算成心跳为120次/min。先描记胎儿瞬时心率10分钟,作为基线。胎儿心率平均在120~160次/min之间者为正常范围;基线频率超过160次/min者为轻度心动过速;超过180次/min为重度心动过速;不到120次/min者为轻度心动过缓;在100次/min以下者为重度心动过缓。胎儿心率短暂的变异(历时几十秒到几分钟),凡上升者称加速,下降者称减速,但基线不变,频率改变持续10分钟以上者,称基线上升(或下降)。
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参考词条