查询词典 sieves

Methyl methacrylate were passed through an alumina column, dried over molecular sieves, deaerated by bubbling argon and stored under argon.

这个氧化铝柱为我没用过，是什么样的呢？在一个玻璃柱里填充氧化铝可以吗？

Because the size distributions are so narrow, only 3 electroformed sieves can be used for analysis.

因为粒度分布很窄，只有3个电铸筛可用于分析。

Each of the filter calibration standards have been analysed 5 times using Electroformed sieves traceable to NIST and NPL.

每中过滤校准标准颗粒都会用电铸筛，根据 NIST 和 NPL 分析5次。

Particle sizes are measured by highly accurate electroformed sieves traceable to NIST standards of length.

粒径经过高精确度电分子筛测量，可溯源到 NIST 。

Having constructed the size distributions, the microspheres are initially certified by high precision Electroformed sieves calibrated against NIST and NPL standards

而构成的大小分布，微粒最初经高精度电铸筛根据 NIST 和 NPL 标准进行校准。

Microporous molecular sieves, such as zeolites, are one of the most important porous materials, which have wide usage in ion-exchange, catalysis, gas adsorption and separation, and microreactors etc, benefited from their highly ordered pore structures and good physical or chemical performance.

微孔分子筛材料是无机多孔材料家族中的重要一员，由于它们具有规整的孔道结构和独特的性能而被广泛用于离子交换、催化、吸附、分离和化学微反应器等主客体化学领域。

The adsorption characteristics of small amount of water in isopropanol on 4A molecular sieves were studied in this paper.

对异丙醇中微量水在4A分子筛上的吸附性能进行了研究。

In recent years, great progress has been made in synthesis, modification, and novel application of mesoporous molecular sieves.

近年来，在中孔分子筛的合成、修饰改性及催化应用方面的研究已经取得了较大进展。

Some problems and new trends in the study of mesoporous molecular sieves are also pointed out in the end

这部分内容为本文选择MCM-48型中孔分子筛作为研究对象提供了相关的背景材料。

This thesis is concentrated on the design for a series of novel structures of molecular sieves with extra-large pores.

本论文总结了作者对系列超大孔新型分子筛结构的设计与优化的研究。

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