一项2010年研究发现，与正常的静止频率每分钟60下相比，频率达到90下或者更高，将使妇女死于心脏病的风险增加至三倍。
A 2010 study found that compared with a normal resting rate of 60 beats per minute, a rate of 90 or above triples a woman's risk of dying from heart disease.
如果探测器与火星保持静止，那么它向地球发出的信号将会产生频率畸变。由此，我们可以推算出火星轴线的扰动率。
If the rover were not moving, the frequency distortions of its signals to Earth would reveal the rate of wobbling in Mars's axis.
为了实现真正的基态，物理学家不得不将光束冷却到接近绝对零度，他们还要通过使光束保持静止来增大其频率，让量子尺度变得尽可能大。
To reach the ground state, physicists had to cool their beams to nearly absolute zero. They also had to make the quanta as large as possible by making a beam stiffer to increase its frequency.
应用推荐