查询词典 sieves

The present situation of the application of the heteroatom-containing molecular sieves in chemical industry is reviewed, and the problems in their synthesis and application are analyzed.

最后对杂原子分子筛的应用前景进行了展望，并对其合成和应用存在的问题进行了分析。

The effect of Nb content on acid amount and strength of composite molecular sieves is not very much.

在实验范围内，Nb／Al比对复合介孔氧化物表面酸性的影响不大。

These phenomena is due to porous effect and high contact area from mesoporous molecular sieves.

这些现象是由於中孔洞分子筛的孔洞效应和高接触面积所导致。

Design and analyze of amplitude photon sieves based on angular spectrum method.

基于角谱法的振幅型光子筛的设计和分析。

Pore and surface chemical modification technology of zeolite is an important way of second synthesis of molecular sieves.

沸石分子筛孔道和表面化学修饰是对分子筛进行二次合成的重要手段。

In accordance with characteristics of cereal, crutches of sieves and combination wags of sieve were selected.

依据谷物的特性合理选择了筛面结构和筛面的组合形式，分析确定了筛孔直径和其它结构参数。

This machine have two or three classification sieves.

脱皮机有两个或者三个分级筛网。

But the worse thermal and hydrothermal stabilities of mesoporous molecular sieves limited their application.

但是介孔分子筛的热稳定性低，限制了介孔分子筛的实际应用。

The products contamination by atmospheric moisture was avoided by the addition of molecular sieves.

该产品污染大气湿度是可以避免的，由另外的分子筛。

This dissertation focuses on the syntheses, characterizations and catalytic properties of cobalt-containing molecular sieves, and is composed of two parts.

本论文主要研究含钴分子筛催化剂的合成、表征和催化性能，论文分为两大部分。

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