Descartes argues that through direct observation methods, one can discover universal laws from specific experience and th at the discovery process implies certainty.
笛卡尔认为，通过直观方法可以从经验的个别中发现一般，而且这个发现过程是必然的、确定的。
Methods We compare and analyse the result of direct smears observation.
方法：用涂片直接观察结合革兰氏染色与培养结果进行综合分析。
Several morphological analysis methods of filamentous microorganisms such as direct observation, digitizing table and image analysis were introduced in this paper.
丝状微生物形态分析有直接观测法、计数表法和图象分析法等。
Methods the study belonged to an observational research, we used the way of direct observation to detect samples which consistent with the internalizing standards in order.
方法：本次研究属于观察性研究，拟采用直接观察方式将符合纳入标准的样本序贯检测，在同一适宜的条件下进行腋温、足皮温和双下肢动脉彩超的检查。
General methods for studies on primate diet at home and abroad mainly include direct observation, fecal analysis, artificial feeding, contents in stomach analysis and rumen analysis.
国内外常见的灵长类动物食性研究方法主要包括实地观察法、粪便分析法、室内笼养饲喂法、胃内容物分析法和毛发中同位素含量测定法等。
General methods for studies on primate diet at home and abroad mainly include direct observation, fecal analysis, artificial feeding, contents in stomach analysis and rumen analysis.
国内外常见的灵长类动物食性研究方法主要包括实地观察法、粪便分析法、室内笼养饲喂法、胃内容物分析法和毛发中同位素含量测定法等。
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