塑料是用来定义由碳原子和其他元素以共用电子对的方式结合而成的聚合树脂连同有机物或者无机物类。
The term plastic is used to define human-made polymer resins containing carbon atoms covalently bonded with other elements, along with organic or inorganic substances.
水培实验研究了由泥炭和稻草提取的两种水溶性有机物（WSOM）对水稻幼苗生长、光合特性及元素吸收的影响。
This study was conducted to investigate the effect of the water - soluble organic matter (WSOM) extracted from peat and rice straw on the growth and the element uptake of rice by water culture.
提出了一种基于元素和化学键的估算有机物临界体积的新方法。
A new method based on elements and chemical bonds was developed for estimating critical volume of organic compounds.
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