Based on the conception of formal word, the author inquires into the non grammatical factors for determination of segmentation element. They include the semantic factors, phonetic factors.
A method for the determination of six inorganic anions on the surface of Printed Circuit Board (PCB) by non-suppression ion chromatography was proposed in this paper.
本文提出了一种利用非抑制型离子色谱法测定印制电路板表面六种无机阴离子污染物的方法。
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The method of testing the non combustibility of the composite material by using calorimeter is scientific and its determination conditions are rather safe and practical.