查询词典 xylenes

Cancer 癌症试译 Xylenes may also be co-carcinogens and increase the number of skin cancers caused by other carcinogens in laboratory animals.

二甲苯也可能是助癌剂，能增加其他致癌物引起实验动物罹患皮肤癌的数目。

Air sample was taken for the determination of arenes (mainly benzene, toluene and xylenes), and the volatile gaseous mixture above the paint-diluent was taken for the analysis of VOC's.

从油漆稀释剂上方的挥发气体中取样用于有机挥发物的分析。

Objectives To explore the indoor air pollution and its health effect s of formaldehyde and BTEX (benzene, toluene, ethylbenzene and xylenes isomers) in the decorative materials in newly decorated rooms.

目的：探讨装饰材料中主要有害物质甲醛及苯系物对室内空气的污染及健康效应。

Phthalic acid esters are widely used in the many fields of industry. So many countries including China have come to pay attention to them and make up the codes for limiting the content in some products such as textile. By combining international codes, the thesis selects coating and textile that have close relative with people as objections. The research results are as follows:1. The thesis has established the textiles preparation method by a series of experimentations such as extraction solvent, extraction time, solid-phase extraction. The average recoveries of eleven phthalates are from 80.30% to 98.00%, and the relative standard deviations from 0.59% to 2.56%, the results show that this method is accurate and credible.2. The thesis set up the simultaneous determination of benzene, toluene, xylenes and phthalates in coatings.

邻苯二甲酸酯类化合物被广泛地应用在工业领域的各个方面，国际上已经开始重视邻苯二甲酸酯作为一种内分泌干扰素的危害性，对在一些产品中的用量作出了限制，但没有具体的分析测定方法，本论文结合国际法规选择了与人们生活密切相关的涂料和纺织品来研究其中邻苯二甲酸酯类环境激素的测定方法，研究内容如下：(1)通过对提取溶剂、提取方式、提取时间的选择实验以及固相萃取的一系列条件实验，首次建立了纺织品中测定邻苯二甲酸酯类环境激素的前处理方法，并对分析方法作了准确度、精密度验证。

The gaseous stream laden with toluene,ethylbenzene and the three xylenes compounds is used to evaluate the transient performance of a biotrickling filter that packes with the mixture of ACOF and stainless steel mesh as biological carrier.

用以纤维附着活性炭和不锈钢丝网为载体材料的气体生物滴滤器进行了净化TEX混合气体的负荷冲击和闲置恢复运行。

The average recoveries of benzene, toluene,-xylenes, o-xylene are from 97.21% to 103.10% and the RSDs are from 0.12% to 0.95%. And the average recoveries of Phthalic acid ester are from 96.01% to 102.02% and the RSDs are from 0.92% to 2.46%.

2采用PTFE膜过滤前处理法，首次建立了涂料中苯系物和邻苯二甲酸酯类环境激素的同时测定方法，并对分析方法作了准确度、精密度以及实验室间验证。

Levels of benzene, toluene, ethylbenzene and the xylenes in different indoor microenvironments such as shopping centers, super markets, cinemas and station waiting rooms were investigated in Hangzhou.

分析评价了杭州市商场、超市、影院、车站候车室等公共场所室内空气中BTEX的污染特征、来源及健康风险。

Benzene, toluene, ethylbenzene, xylenes isomers and methyl tert-butyl ether exist widely in the groundwater contaminated by gasoline.

中文摘要苯、甲苯、乙苯、对二甲苯与甲基第三丁基醚(methyl tert-butyl ether，简称MTBE)普遍存在汽油污染的地下水中。

A series of three factors-three level orthogonal experiments were performed to investigate anaerobic biodegradation performance of BTEX （benzene, toluene, ethlybenzene and xylenes ）including three types of bacteria;nitrate, sulfate and ferric iron reducing conditions;20 mg·L^-1, 50 mg·L^-1 and 80 mg·L^-1 substrates concentration levels.

采用正交试验法对BTEX各个组分在不同菌种、不同电子受体和污染物不同起始浓度的条件下生物厌氧降解效率进行研究。

The compounds monitored for this purpose are petroleum hydrocarbons such as benzene, Toluene and Xylenes.

里面含有苯，甲苯，二甲苯。

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