研究了杉木自毒物质邻羟基苯甲酸胁迫对2个杉木优良无性系组培苗（分别记为01号、02号）叶片的膜质过氧化及渗透物质的化感效应。

The allelopathic effects of salicylic acid stress on membrane lipid peroxidation and osmosis-regulating substances in two well performing Chinese fir clones(referred to as 01 and 02) were studies.

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我们无法渗透到物质的本质中。

We cannot penetrate into the nature of substances.

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此外，解吸附电喷雾离子化技术除了能检测出吸留下指纹者皮肤上的积存物质，还能辨别通过皮肤渗透出来物质的痕迹。

Moreover, besides indicating what substances had been deposited on the skin of the person who left the print, DESI can discern traces of substances that have been secreted through it.

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