约翰·米切尔，英国物理及天文学家，由此得到灵感并提出了第一个地球内部波动理论。
John Mitchell, an English physicist and astronomer, was inspired by it to put forward the first theories of wave motion in the earth.
本周 Lacker说”金融市场内部及自身波动，并不要求改变联邦基金利率的目标值。
“Financial-market volatility, in and of itself, does not require a change in the target federal funds rate, ” said Mr Lacker this week.
可能受到振动、波动载荷、冲击载荷或动力载荷的内部螺栓应加以保护防止松动。可采用双螺母、防松动垫圈、点焊等。
Internal bolts subject to vibration, fluctuating load, impact load or dynamic load shall be protected against loosening. Double nuts, unti-loose washers, tack welding, etc. shall be used.
应用推荐