低温冷冻手术系统制冷的原理是焦耳-汤姆逊原理,也就是气体节流效应。一般在数十秒内氩气可使针尖温度迅速降至零下175 ℃,氦气使温度升至零上45℃。
冷冻治疗牙本质敏感的动物实验及1853个牙临床疗效分析_医网打尽文献搜索 关键词 牙本质过敏;冷冻外科手术;动物试验 [gap=875]Key words Dentin sensitivity;Cryosurgery;Animal experiment
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巴氏涂片可以检测出那些异常细胞,它们是癌症的前兆,然后通过一些技术手段,如激光,冷冻疗法,或着难得也用外科手术来杀灭这些细胞。
Pap smears work by detecting abnormal cells that are cancer precursors and that can be destroyed using techniques like lasers and cryotherapy or, rarely, surgery.
用药物、镭射、局部冷冻处理、电烧灼和外科手术都可以祛除疣子。
They can be removed by directly applied medications, laser treatment, localized freezing, electrical cauterization, or surgery.
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