onset of heat meaning in English

开始发情
开始发热

The occurrence of loss of sensation , decreased muscle tone and unconsciousness was taken as the onset of heat stroke
当白兔表现一般感觉丧失，肌张力降低及昏迷时可视为热中暑发作。
In addition , the latency for the onset of heat stroke and the survival time after the heat stroke were greatly prolonged by the former surgical procedure , but shortened by the later one
进而，我们发现热中暑发作的潜伏期与存活期会因前者手术而延长，但因后者手术而缩短。