The button can be filled with different aromatic substances to be made into a children's health care badge.
钮扣本体可充注各种芳香物质和制成儿童保健胸章。
This review introduces research progresses in citrus aromatic substances, their distilling, composition and identification.
介绍了柑橘果实皮和汁中芳香物质的提取、组成、鉴定等方面的研究进展情况。
The essential oil contains all kinds of the aromatic substances in Allium tuberosum Rottl. ex Spr. Determined by GC-MS-DS, 20 compounds in essential oil are mainly disulfides and trisulfides.
韭菜的香气成分全部集中于所含精油中，确定其主要成分为二硫和三硫化合物等20种物质。
Generally, aromatic amine belongs to toxic substances and it can cause cancer, malformation, nephritis and other diseases.
芳香胺属于有毒物质，能引起癌症、畸形、肾炎等各种疾病。
The main components of oil are saturated hydrocarbons, aromatic compounds, asphaltenes, resins, and so on. It is difficult to degrade these substances which are bad for aquatic life.
由于石油的主要成分包括饱和烃、芳香烃类化合物、沥青质、树脂类等，这些物质难以降解，并且对水生生物有毒杀作用。
In general, it is composed of 50% resin and vegetable balsam, 30% wax, 10% essential and aromatic oils, 5% pollen, and 5% various other substances, including organic debris.
一般来说，蜂胶的基本成分为：50%的树脂，30%的蜂蜡，10%的挥发物和芳香油，5%的花粉，以及5%的其它物质。
In the existing methods of burning and processing of such substances is not appropriate, because the CFC, halons, polycyclic aromatic hydrocarbons and other substances with high heat stability.
在已有的方法中焚烧处理这类物质不太合适，因为氟里昂，哈龙，多环芳烃等物质具有很高的耐热稳定性。
Result showed that organic substances in black liquor were oxidized by MAE through opening the aromatic rings of lignin.
其结果表明MAE对黑液中的有机物具有一定的氧化作用，能使木质素中的芳环被氧化而打开。
Result showed that organic substances in black liquor were oxidized by MAE through opening the aromatic rings of lignin.
其结果表明MAE对黑液中的有机物具有一定的氧化作用，能使木质素中的芳环被氧化而打开。
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