芳烃

The adsorbents of synthetic graphite which can adsorb both long chain nparaffins and polycyclic aromatic hydrocarbons were prepared by the use of high pressure homogenizer.

使用高压匀浆泵制备出具有同时吸附长链正构烷烃和稠环芳烃能力的石墨吸附剂。

The reductive coupling of aryl halide s to form the corresponding biaryls was effected with high selectivity in water,using formic hydrazide as a reducing agent in the presence of a catalytic amount of Pd/C.

在Pd/C催化下，以甲酰肼为还原剂，卤代芳烃通过还原偶联反应能高选择性地合成相应的联苯化合物。

It was found that indene and naphthalene, which have harmful effects on the combustion property, were produced because of the hydrogen transfer reaction at high temperatures. High conversion ratio and low content of aromatics could not be obtained simultaneously.

在较高温度时，由于氢转移反应，产物中出现了茚、萘等低氢碳比化合物，会影响燃料的燃烧性能，应用时需要根据性能要求在高裂解转化率与低芳烃收率之间进行权衡。

This is a second, but indirect, way in which PAHs can cause cancer.

" "这是第二次，但间接的方式多环芳烃可以导致癌症。

In this study, six surfactants with different ionic type, molecular structure, and phenanthrene (3-rings PAHs) were used to test the effects of surfactant to the degradation of phenanthrene, and to the combined toxicity with the phenanthrene.

本篇论文以六种不同离子类型、分子结构的表面活性剂和以菲为多环芳烃的代表，研究了表面活性剂对菲降解的影响，和与菲共存时的复合毒性，以及表面活性剂对菲在模拟生态系统中的迁移转化规律的影响。

The qualitative analysis of N polyaromatics in heavy oil was made by a double adsorption separation followed by the application of low voltage ionization and high resolution MS direct sampling.

通过两次吸附分离，然后采用低压电离，高分辨质谱直接进样技术对重馏份油中的含氮多环芳烃进行定性测定。

Five variables quantitative structure-biodegradability relationship model was established applying Kier's molecular connectivity indices and shape indices simulation analysis of the biochemical oxygen demand of 42 substituted aromatic compounds with activated sludge.

应用分子连接性指数及分子形状指数分析影响42种取代芳烃在活性污泥中的生化需氧量，建构了一个5变量的QSBR模型，其可决系数(R2)为0。

The content of aromatic hydrocarbons among the liquid phase products was higher than 60%.

液相产物中芳烃含量大于60%。

A wine with structure and delicious aromatics of smooth pickled berries, liquorice, leather and black pepper.

阿与结构和顺利腌制浆果，甘草，皮革和黑胡椒的美味芳烃葡萄酒。

Outdoor lysimeter with wheat plant growth was used to investigate the environmental fate of ^14C-labeled naphthalene in soil.

采用^14C同位素示踪技术和野外Lysimeter试验，进行了小麦种植条件下多环芳烃萘的环境归趋的定量化研究。

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