目的：探讨分娩镇痛的最佳方法及药物剂量。
Objective: To explore the best method and medication dosage.
方法：通过动物实验了解冷冻治疗牙本质敏感的机制及优选冷冻剂量。
Methods: the mechanism of cryotherapy for dentinal hypersensitivity and the dose of cryosurgery were studied in guinea pigs.
方法：制备豚鼠结肠纵肌和横肌肌条，观察不同剂量白芍总甙及工具药对离体结肠肌收缩活性的效应。
Methods: the transverse and longitudinal contraction role of smooth colon muscle strips at the different dosage of TGP and other medicine was separately observed.
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