The lignin is ,the main chemical composition of plants, the organic compound which quantity is only inferior to the cellulose on the Earth, the evolution product of the plant organization. Lignin plays a vital role in plant's normal growth.
木质素是植物体的主要化学组分,是地球上数量仅次于纤维素的有机物,是植物组织进化的产物,对植物的正常生长具有重要作用。
参考来源 - 反义CCoAOMT基因转化苎麻和烟草的研究The effect of process parameters on the chemical composition and structure of titanium oxide films were studied.
研究了工艺参数对氧化钛薄膜的结构及成分的影响。
参考来源 - 改善热解碳人工心脏瓣膜材料血液相容性的研究·2,447,543篇论文数据,部分数据来源于NoteExpress
If a change does not affect the food's chemical composition, we call it a physical change.
如果一种变化不影响食物的化学成分,那我们便称之为物理变化。
The chemical composition of rainfall changes slightly as raid clouds move.
当雨云移动时,降雨的化学成分略有变化。
The chemical composition of rainfall changes slightly as rain clouds move.
降雨的化学成分随着雨云的移动而发生轻微变化。
Now, the differences here may be subtle in terms of chemical composition or if you put these cells under a microscope and looked at their analysis.
干细胞与祖细胞化学成分的区别,还非常微小,除非你把细胞放在显微镜下,或者看细胞分析报告
In the time it takes for one cell division to occur, it could be that this cell entraps a different chemical composition of the cytoplasm then this entraps, and that's a well known concept.
当一个细胞分裂发生期间,很可能这个细胞截留了一种不同的,细胞质化学组分,这种非对称分裂是一个广为人知的概念
We need to have conditions internally that are relatively constant in terms of temperature, and pH, and chemical composition in order for us to thrive.
我们需要体内的环境参数保持相对稳定,这些环境参数包括,温度,pH值,以及化学组成,这样人才能茁壮成长
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