或者是冷热交替。
它随自然气候变换，冷热交替；它也因人类活动排放的温室气体而变暖。
Warmed and cooled by natural trends, heated by greenhouse gases from humans.
如果膨胀系数相差较大，在冷热交替的时候就会出现瓷层裂纹或爆瓷现象。
If there is a large difference in the coefficient of expansion, there will be cracks in the ceramic layer or the phenomenon of exploding porcelain in the alternating heat and cold.
试验目的：探明运动疗法、冷热交替疗法和低强度激光照射疗法对腰肌劳损的疗效。
Objectives: To research the efficacy of exercise therapy, alternate ice and hot therapy and low power laser therapy on chronic lumbar muscle strain.
冷热水交替冲击测试超过6000次(90度热水与15度冷水)。
Alternating hot and cold water testing more than 6000 times (90 degree water and 15 degree water).
探讨硫酸镁冷热敷交替治疗静脉炎的最佳时机。
Objective: to probe into the optimal time of magnesium sulfate cold and hot alternative compress to treat phlebitis.
探讨硫酸镁冷热敷交替治疗静脉炎的最佳时机。
Objective: to probe into the optimal time of magnesium sulfate cold and hot alternative compress to treat phlebitis.
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