These chemical compounds are not necessary for the primary survival of the tea plant's cells; they are what is known as secondary compounds.
这些化合物并不是茶树细胞生存所必需的物质，它们被称为次生化合物。
The huge biomass of sugarcane is mainly composed of monosaccharides and polysaccharide, which are the original or secondary compounds to store energy from photosynthesis.
甘蔗是生物量最高的作物之一，主要化学成分是单糖和多糖；
Plant secondary compounds could decrease the food intake, digestibility and protein availability, and some compounds could effect the normal reproductive performance of herbivorous mammals.
植物次生化合物可降低动物的食物摄入量及消化率、蛋白质可利用率。某些次生化合物还影响植食性哺乳动物的正常繁殖活动。
Plant can release secondary compounds for information transfer, who played such as the role of duce pollination and natural enemies of plant eaters as well as warned of similar attacks have pests.
植物能够释放以其挥发性次生物质构成的气味进行信息传递，起到引诱授粉者、植食者天敌，警告附近同类有病虫侵袭等作用。
Volatile Organic Compounds (VOCS), as one of the major sources of air contaminations, can not only cause direct pollution, but also lead to secondary pollution, such as photochemistry smog.
作为空气污染的主要来源之一，易挥发有机物(VOCS)不仅是一次污染源而且还可能造成光化学烟雾等二次污染。
In this paper carbonylation of nitro compounds with co-reagent based on secondary amine, primary amine and 4-aminopyridine is detailed.
本文介绍了二级胺、一级胺和4 -氨基吡啶为共试剂的硝基化合物的羰基化反应情况。
Cold plasma technology used for the decomposition of Volatile Organic Compounds (VOCs) has many advantages, such as high removal efficiency, none secondary pollutant producing and operating easily.
低温等离子体技术对挥发性有机物的去除具有去除率高、无二次污染物产生、易操作等优点，该技术的研究和应用受到广泛的关注。
The various methods for the umpolung of carbonyl compounds (aldehydes and ketones), secondary amines and the most frequently used umpolung reagents are introduced.
先介绍了羰基化合物(醛、酮)的极性转换的各种方法，然后谈到胺的极性转换方法和最常用的极性转换试剂。
Phenolic compounds, polysaccharides, proteins and unidentified secondary metabolites are four main factors interfering the isolation of RNA from plant tissues.
酚类化合物、多糖、蛋白质和未知次级代谢产物是影响植物组织rna提取的几个主要干扰因素。
Apparently most degradation of these xenobiotic compounds occurs after active growth, during the secondary metabolic lignin degradation phase.
显而易见，大多数异生物质的降解发生在活性生长之后，次级代谢木质素降解阶段。
The XRD results show that all the powder samples are perovskite-type compounds and no simple metal oxides or any other secondary phase exits.
射线衍射分析(XRD)表明所有样品均为钙钛矿氧化物结构，没有简单金属氧化物或其它杂相存在。
In the liquefaction process there was reversible reaction between the heavy oil and volatile organic compounds; organic dissolved was mainly transformed into gas in the secondary reaction.
液化过程中挥发物与重油之间存在着可逆反应，轻油在液化过程中发生二次反应主要生成气体。
According to Electron probe analysis, the secondary color is formed because of the iron compounds in the cranny and clearance of jadeite.
翡翠的颜色多种多样，按照其颜色成因可以分为原生色和次生色。
Results indicated MABR could effectively avoid volatile organic compounds volatilization caused by conventional bubble aeration and secondary pollution of the air.
实验证明MABR可以有效避免常规鼓泡曝气对易挥发性有机物的吹脱作用，避免了对空气的二次污染。
Of all the methods of degradating phenolic compounds, biodegradation has been a main trend because of its low cost and no secondary pollution.
在众多的治理方法中，生物法具有成本低、无二次污染等特点而成为含酚废水处理的主流。
Of all the methods of degradating phenolic compounds, biodegradation has been a main trend because of its low cost and no secondary pollution.
在众多的治理方法中，生物法具有成本低、无二次污染等特点而成为含酚废水处理的主流。
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