然而，当你靠近他们时，兴奋和紧张的感觉会突然增强，心率也会随之加快。
The sense of excitement and tension levels rise suddenly though, as does your heart rate, as you move closer to them.
而切削嗓声只与主轴转速有关，存在噪声突然增强的特定转速。
Cutting noise only relates with spindle rotating speed, and noise becomes strong abruptly under specific rotating speed.
结果表明： 热带气旋中心附近存在非热成风涡度负值中心， 有利于近海热带气旋突然增强；
Results show that the existing of a negative non-thermal wind vorticity center near the TC center is favorable to its offshore rapid intensification.
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