引力粒子是高速运动的以太粒子，引力场的传播速度远远超过光速，牛顿的引力方程得到修正。
Gravitational particles are moving Ether particles in high-speed, the gravitational field spread much faster than the speed of light, Newton's gravitational equation was amended.
采用广义牛顿粘度公式，得到了振动力场作用下的异向双螺杆挤出机螺棱侧间隙内的速度分布近似解析解。
The approximate analytical solution of the velocity distribution in the side gap of the counter-rotating twin screw extruder is obtained by means of the generalized Newtonian viscosity.
牛顿力学：牛顿第一、二、三定律，惯性和非惯性参考系，牛顿守恒定律，力和潜能，重力场，向心力，低频振荡。
Newtonian dynamics: first, second and third laws, inertial and non-inertial reference frames, conservation laws, forces and potentials, gravitational field, central forces, small oscillations.
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