There is a phase difference between the stress signals on the pendulum edgeand specimen.
试样上和摆锤刀口上的应力信号差一个位相。
Don't mess around with sharp knives!
不要摆弄刀口锋利的刀！
Steel - charpy impact test (V-notch) ?
钢的摆锤式冲击试验（v形缺口）
pendulum dynamometer
摆锤式测功器摆锤式测力计
oscillating device mechanism
重锤摆动装置的机构
Some bobs have a nut under them.
一些摆锤下面有螺母，
(The pendulum is usually measured from the top point to the middle of the bob.
我们称底部的重物叫摆锤（摆的长度一般从顶点到摆锤中间来计算）。
Pendulum impact testing machines
GB/T3808-1995摆锤式冲击试验机
Test method for pendulum impact resistance of plastic films
GB/T8809-1988塑料薄膜抗摆锤冲击试验方法
The mass of the pendulum bob does not change from one location to another on the earth's surface.
摆锤的质量在地面各处都一样。
When we turn the nut, we raise or lower the bob.
我们一转动螺母，就会升高或降低摆锤。
automatic oscillating spindles chisel mortiser
自动刀头摆动式凿眼机
hammer and sickles
锤子和镰刀(共产党党旗的图案)
When pulled to one side of its equilibrium position and released, the pendulum bob vibrates about this position.
把此质点作为摆锤拉到平衡位置的一侧，然后释放，摆锤就在平衡位置附近摆动。
Their places were set with knives as well as chopsticks.
他们座位前面既摆了餐刀，也摆了筷子。
He nicked the razor.
他弄缺了剃刀刀口。
The principle of the stationary pendulum mass is that for a displacement of frame, including recorder upwards.
稳态摆锤的原理是，摆的框架包括记录器向上位置。
Some bobs have a nut under them. The nut turns on a thread cut in the metal of the rod.
一些摆锤下面有螺母，它拧在金属杆的螺纹上。