有毒物质

Based on the theoretical framework of the leakage and spread of such poisonous and harmful substances as glycol and acraldehyde, this paper advances the graphic simulation of GIS of poisonous and harmful substances.

以石化企业乙二醇、丙烯腈装置产生的有毒、有害物质泄漏、扩散和污染范围的理论模型为根据，提出有毒、有害物质的地理信系统扩散图形模拟方法。

"You may find two kinds of toxic chemicals including formaldehyde and resolvable toxic aromatic amine dyes."

"你可能会在新衣服上发现两中有毒的化学物质–甲醛和有毒的可溶性芳香胺染料。"

Actually a lot of flower in dweller home has noxiousness, bamboo of curvature of the spinal column is natural ashman, the harmful material in OK and cleared air, but also be poisonous plant; The four seasons of green trailing plants is evergreen and can absorb toxic gas, but juice juice is poisonous, come up against the skin to be able to be caused red urticant, feed by accident also can cause guttural ache; Evergreen belongs to lily division, poisonous place is in rhizome, feed by accident can appear disgusting, bellyacke, limb is algid insensible even; And the leaf juice of zebra evergreen c

其实居民家中好多花都有毒性，龟背竹是天然的清道夫，可以清除空气中的有害物质，但也是有毒植物；绿萝四季常青且能吸收有毒气体，但是液汁有毒，碰到皮肤会引起红痒，误食也会造成喉咙疼痛；万年青属百合科，有毒部位在根茎，误食会出现恶心。

Foods that contain or are contaminated by toxic or deleterious substances and can thus be injurious to human health

含有毒、有害物质或者被有毒、有害物质污染、可能对人体健康有害的

Many deodorizers have been produced in large scale and used in many areas, which has made good impact on the elimination of fetor produced by the dejection of livestock.

项目描述：近20年来国外在开发微生物制剂，消除空气、水、土壤中的有毒气体和有害物质方面成效卓著，许多"除臭剂"已规模生产并大面积推广使用，在消除畜禽粪便产生的恶臭和有毒气体方面取得良好效果。

The examples show: It is not only scientific and rational approximately, but also as referenced calculational methods of threshold quanlity of increased or emendatory chemical substance in the "Identifecation of major hazard installations "(GB18218-2000) in the future, that appliance respective of TNT equivalent method, gasoline equivalent method, methane equivalent method, methl ethyl ketone peroxide equivalent method and hydrogen sulfide equivalent method for the rhrehold quanlity in the work site and store area of volatile substance, combustible liquid substance, combustible gaseous substance, active chemical substance and poisonous substance. At the same time, Comparing with the death radius method and evaluative method of combustible, volatile, poisonous mojor hazardinstalltions, hazard grading method of hazard degree grading in the chemical factory for the major hazard installations is simplerof operation and more practical of calcutating result, and have some significance on generalizer.

实例验证表明：TNT当量法、汽油当量法、甲烷当量法和过氧化甲乙酮当量法分别对爆炸性物质、易燃液体物质、易燃气体物质和活性化学物质的临界量确定，具有一定的科学性和合理性，可作为《重大危险源辨识》(GB18218-2000)中临界量数值修订和危险物质扩充时进行临界量确定的参考计算方法，同时，化工厂危险程度的重大危险源分级法与易燃、易爆和有毒重大危险源评价法和死亡半径法相比，评估过程简单易行，分级结果符合实际，具有较强的可操作性和一定的推广意义。

Assulta and the induction of GST activity by nicotine and capsicine in H. assulta provided partial supports for the hypothesis that diet breadth was governed by detoxification abilities. The results also indicated that two sibling species had different strategies of adaptation to toxic substances: H. assulta saves expenditure of nutrients and energy by restricting their countermeasures to a few potentially toxic compounds. H. armigera, by contrast, must be prepared to counter a wider range of potential toxins. 5. Compared with parental species, hybrids of reciprocal hybridization had significant difference in feeding preference for hot pepper.

结果显示，广食性的棉铃虫在中肠羧酸酯酶和谷胱甘肽-S-转移酶活性方面高于寡食性的烟青虫，但烟青虫谷胱甘肽-S-转移酶活性可以被寄主植物内的烟碱和辣椒素所诱导，表明解毒酶活性在一定程度上影响着植食性昆虫的食性广度；同时也暗示着二近缘种对有毒的次生物质采取不同的适应策略：烟青虫有选择地对付种类较少的植物次生物质以减轻营养和能量的消耗；棉铃虫则必须对付存在于其寄主植物内的种类繁多的有毒次生物质。

Only intake of toxicologically significant amounts can lead to adverse health effects even for a relatively toxic substance.

甚至对于比较有毒的物质，也只有在摄入有毒理学意义的量以后才能引起不利的健康影响。

Ecol. chemicals of potential concern by comparing the observed concentrations with international water quality criteria and chronic toxicity values.

第一级评估通过比较国际水质标准浓度以及有毒物质程度确定了344种潜在化学品。

A legume, the Kentucky coffee tree is actually a flowering plant that produces pods containing seeds that are otherwise edible apart from the toxic substance called cystine that it contains, which is poisonous to humans unless the seeds are roasted thoroughly.

一豆科、肯德基咖啡树的开花植物，是制作荚含种子可食，否则除了含有有毒物质，它叫胱氨酸、除非是对人体有毒性种子烧透。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐