Because P and S waves travel at different but fairly constant speeds, the interval between their arrivals increases in proportion to the distance from the earthquake focus, or initial rupture point.
由于P波和S 波以不同但相当恒定的速度传播，它们到达的间隔与到震源或初始破裂点的距离成比例地增加。
The formal definition is that the gravitational potential energy at a point P is the work that I, Walter Lewin, have to do to bring that mass from infinity to that point P.
形式定义就是,它在点P的重力势能,等于我，将物体从无穷远处,移动至点P所做的功。
But I don't care about that force because I'm going to take the torque about point p.
但是，我不在乎这些力，因为我要取的是，点p的力矩。
So if I take the torque relative to point P, then I have...
如果取点P的,力矩，那么就得到…
So, the position of this point, p, is going to be the same as OP knowing the vector OP from the origin to this moving point.
点p的位置就是，从原点指向这个运动点的向量。
p2 It's taking the name p 1 and it's changing its value to point to exactly what p 2 points to.
我要把p1赋值为1,这个操作有什么用呢？,这个操作把p1这个名字的,指针的值改变让它。
Share index futures dropped 99 points to 3, 995.0, a 146.3 point discount to the close of the underlying S&P/ASX 200 index .AXJO.
澳大利亚股指期货下跌99点，至3 995.0，比该期货标的——澳大利亚S&P/ASX200指数.AXJO在上一交易日收盘时的点位低146.3。
At that point, typing the Control-p key combination writes the contents of the screen to your output file.
此时，键入Control - p组合键，将屏幕内容写到输出文件。
Well, at point P, the velocity vector QP is perpendicular to the line QP, 1 so the sine of that angle is one.
点P，速度向量,垂直于直线，所以该角的正弦值为。
It's fine to schedule meetings at any point in the day—but schedule only the most unimportant ones after 3 p. m.
在一天中的任何时间开会都可以——但在下午3点之后只安排最无关紧要的会议，最好是不费脑子只进行寒暄的那类会议。
I should like to point out that our prices were calculated without insurance for any special risk. So we applied for the usual W. P. A. coverage and let our customers deal with the matter of breakage.
我想要指出的是，我们的价格没把任何特殊险计算在内，所以我们只投保了通常的水渍险，而让我们的客户自行办理破碎险事宜。
There isn't a fixed way to choose parameter P in inverse Point translation method which can accelerate the convergence in power method.
加速幂法收敛的原点平移法，参数P现在还没有一种固定的选取方法。
Because of this way to the same ground point, the S-wave static correction is often much greater than the P-wave.
这样一来就导致了相对于同一地面点来说，横波静校正量往往远大于纵波静校正量。
Given the velocity ratio of S-to P-waves, the depth of reflector and the offset, the horizontal distance between source and the converting point can be determined by solving a quartic equation.
如果我们已知介质中横波与纵波速度的比值、水平界面的埋藏深度和炮检距，炮点到共转换点的水平距离就可以通过解一个四次方程求出。
Given the velocity ratio of S-to P-waves, the depth of reflector and the offset, the horizontal distance between source and the converting point can be determined by solving a quartic equation.
如果我们已知介质中横波与纵波速度的比值、水平界面的埋藏深度和炮检距，炮点到共转换点的水平距离就可以通过解一个四次方程求出。
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