散列函数非常复杂，但现代类库中都有现成的类，重要的是，如何对散列法进行细调以获得最好的性能。
Hash functions can be complex and sophisticated, but modern libraries have good defaults. The important thing is how hashes work and how to tune them for maximum performance benefit.
目的：观察川芎茶调散治疗血管性头痛临床疗效。
Objective:To observe the clinical curative effect of Chuanxiong Chatiao San to treat vascular headache.
目的：观察十味调脂散治疗2型糖尿病高脂血症高粘血症疗效。
Objective: To observe the effect of this powder on hyperlipemia, and hyperviscosity syndrome from diabetes innocens.
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