方法：用琼脂平板扩散法、琼脂平板连续稀释法。
Methods:By means of agar plate diffusions and agar plat continuously dilution.
研究了超滤和水连续稀释过滤对生物碱的纯化结果。
Ultrafiltration followed by discontinuous diafiltration was carried out to examine the result of purification of alkaloids.
方法：采用试管连续稀释法，对清咽袋泡剂进行了体外抗菌试验研究。
Methods:The antimicrobial tests were studied by using tubes serial dilution method.
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