查询词典 trinitro-toluene

Objective To establish a gas chromatography method which will be suitable for determination of one time of the benzene, toluene, dimethylbenzene in the adhesives.

目的 建立适用于同时测定常用溶剂型胶粘剂中苯、甲苯、二甲苯含量的气相色谱分析方法。

The method is accurate, feasible and suitable for determination of the benzene, toluene, dimethylbenzene in the adhesives.

RSD为1.60%~2.85%。结论该方法适用于同时测定常用溶剂型胶粘剂中苯、甲苯、二甲苯的检测，方法准确、可靠。

Methods The time-weighted average concentration Short-term exposure limits of benzene and toluene and dimethylbenzene in 10 furniture factories were measured.

对10家家具厂工作场所中苯、甲苯、二甲苯进行时间加权平均浓度和短时间平均浓度测定。

The method is mainly according to GB/T 11737-1989 "sanitation test standard method for benzene, toluene and dimethylbenzene in air for residential area, gas chromatograph method".

本方法主要依据GB/T 11737-1989《居住区大气中苯、甲苯和二甲苯卫生检验标准方法气相色谱法》。

Benzene(benzene,toluene,dimethylbenzene) solution is favored for its easy dissolution and moderate evaporating speed,but it is also the main factor causing interior air pollution.

但同时苯系物也是造成室内空气污染的主要因素。

And the ethylene cracking furnaces are the primary equipments of the petrochemical industry, for example, about 65 percent of gross weight of the three olefins (ethylene, propylene and 1,3-butadiene) and the three aromatics (benzene, toluene and dimethylbenzene) is produced by the ethylene equipments.

乙烯绝大部分是由石油烷烃裂解而生产，乙烯裂解炉是乙烯生产中的关键设备，三烯和三苯总量的65%都来自乙烯生产装置。

It can be widely used to get rid of toluene,dimethylbenzene,and hydroxybenzene,and ester,and hydroxyketone,and aldehyde as well as bad smell and other gases containing small heavy metal.

可广泛用于处理含有甲苯、二甲苯、苯等苯类、酚类、酯类、醇类、醛类等达式有机气体及恶臭气体和含有微量重金属的低浓度、大风量的各类气体。

Methods The levels of formaldehyde, benzene, toluene and dimethylbenzene indoors at different time after decoration were determined with methods described in GB11737 and the dwellers' adverse reaction with a given questionnaire was surveyed????

选择装饰竣工后不同时期的居室，分别测定室内空气中甲醛、苯、甲苯、二甲苯的浓度，同时对居留者的不良反应进行调查。

The method comprises following steps: taking diphenol and 3- trifluoromethyl- 4- chloronitrobenzene as raw material, salt precipitating for diphenol and potash, refluxing with water- containing toluene, reacting with 3- trifluoromethyl- 4- chloronitrobenzene and getting dinitro monomer; taking dinitro monomer, ferro powder and HCl as raw material, ethanol and water as disslovant for refluxing and ethanol recrystallization, getting fluorine- containing aromatic diamido monomer.

合成方法是以二酚与3-三氟甲基-4-氯硝基苯作原料，先将二酚与碳酸钾成盐，甲苯带水回流反应，然后与3-三氟甲基-4-氯硝基苯反应制得二硝基单体；再以二硝基单体，铁粉，HCl为原料，乙醇和水做溶剂，回流反应、乙醇重结晶，得到含氟芳香二胺基单体。

Other aromatic compounds such as toluene, diphenylmethane and 1,1,2-triphenylethane were also deuterated smoothly in C6D6 within 24 h at room temperature.

其它的芳香族化合物如甲苯、二苯甲烷和1，1，2－三苯乙烷与氘代苯在室温下24小时也顺利地发生氢氘交换反应。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。