Objective: to improve the success ratio of voluntary detoxification and choose an ideal therapy which can completely control withdrawal symptoms in short course and more acceptable by the patients.

目的：为提高自愿戒毒者的脱毒成功率，选择疗程时间短、控制戒断症状完全、患者乐意接受的治疗方法。

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These methods such as withdrawal narrow neck of seed, setting feasible temperature field, cont rolling the crystal growth ratio and reducing vibration of machine are presented.

例如，通过缩细颈，布置合理的温场，控制晶体的生长速率和减少机械振动等方法。

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