Rolling theoretical rotation axis line of the inner ring to the center axis line of bearings, thrust bearings on the shaft circle refers to the axis line.
滚动轴承的理论旋转轴心线，对向心轴承即内圈轴心线，对推力轴承则指轴圈轴心线。
If a gyro is used to measure the rate of rotation around the aircraft roll axis, it will measure a non-zero value as long as the aircraft is rolling, but measure zero if the roll stops.
使用陀螺仪测量飞机机体轴向的旋转角速率时，如果飞机在旋转，测得的值为非零值，飞机不旋转时，测量的值为零。
The problems in lock nut of roll axis and sleeve of precision rolling mill are analyzed, some measures proposed, good result got.
针对高速线材生产中，精轧机辊轴及隔套锁紧螺母存在的问题进行分析，提出了改进措施，取得了较好效果。
The rolling contact fatigue performance of ceramic balls with fine compact equal-axis grain and fewer glass phase exceeds that of those with slightness-needle grain and more glass phase.
细小致密的等轴状晶粒、玻璃相少的陶瓷球的滚动接触疲劳性能优于长针状晶粒、玻璃相多的陶瓷球。
Static alignment accuracy of two-position is 20 seconds, dynamic alignment accuracy of two-axis rolling and intermittent rolling is 30 seconds.
两位置静对准试验对准精度为20角秒，双轴摇摆和断续式双轴摇摆两位置晃动对准试验的对准精度达到30角秒。
The influence of the gyroscopic moment produced by the rolling rotor on the dynamic characteristics of the principal axis system of certain dish centrifuge is analyzed theoretically.
从理论上分析了转子转动状态下产生的陀螺力矩对碟式分离机立轴系统动态特性的影响。
From the rolling contact problem of two viscoelastic cylinders with parallel axis, a series of normal-tangent contact coupled integration equation is obtained.
从两个平行轴粘弹性圆柱体的接触问题出发，可以得到一个法向接触和切向接触耦合的积分方程组。
According to the fundamentals that pure-rolling must take place between the pitch line of hob and the pitch curve of gear workpiece, the 4 axis complicated simultaneous-control relation was obtained.
从滚刀节曲线与齿轮工件节曲线之间必须进行纯滚动出发，推导出联动关系为4个坐标的复杂联动。
In this paper, the forced rolling movement about the symmetry axis at a fixed Angle of attack is numerically simulated.
采用数值模拟方法模拟了乘波飞行器在固定迎角下绕其对称轴强迫滚转运动这一过程。
An airway in the center bit of the electric engine axis is used for taking away the heat which the magnetic coil and rolling eddy current loss produce.
在电机轴中心钻有一个通风孔，利用电机风扇的风通过通风孔形成一气流回路带走磁线圈和转子涡流损耗产生的热量。
An airway in the center bit of the electric engine axis is used for taking away the heat which the magnetic coil and rolling eddy current loss produce.
在电机轴中心钻有一个通风孔，利用电机风扇的风通过通风孔形成一气流回路带走磁线圈和转子涡流损耗产生的热量。
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