求翻译：继续缓慢放气，使袖带内压力逐渐降低，当袖带内压力低于心收缩压，但高于心舒张压这一段时间内，心脏每收缩一次，均可听到一次声音。当是什么意思？

Continue to slowly deflate the cuff pressure is gradually reduced, and when the cuff pressure below heart systolic blood pressure, but higher than this period of time within the heart diastolic blood pressure, heart contraction time, can hear a sound. When the

Continue to slowly bleed to deflate the cuff, the pressure to gradually reduce the cuff pressure is lower than the systolic pressure, diastolic pressure but it is higher than the period of time, each heart contraction, a time to hear a sound. When

Continues to deflate slowly, causes the sleeve belt internal pressure to reduce gradually, when the sleeve belt internal pressure is lower than the heart systolic pressure, but is higher than in heart diastolic pressure this period of time, the heart contracts every time one time, may hear a sound.W

Continued slow gas, gradually reducing pressure in the cuff, when the cuff pressure falls below systolic pressure, but higher than diastolic pressure over a period of time, every time the heart contraction, can hear a sound. Dang

正在翻译，请等待...