sieve 雅思GRE专八

We often shake flour through a sieve.

们经常用筛子筛面粉。

Based on analysis of problems existed in application of inertial vibrosieve,the new type variable frequency hydraulic straight-vibrating sieve is introduced.

分析了惯振动筛存在的问题 ,提出新型变频液压直线振动筛的应用 ,并详细介绍了液压激振的理论成果。

The method of liquid phase rearrangement of styrene oxide to phenylacetaldehyde catalyzed by SAStype solid acids and molecular sieves was studied.

研究了SAS型固体酸和几种分子筛上氧化苯乙烯液相重排成苯乙醛的反应,考察了催化剂的、择和和稳定。

Mesoporous molecular sieves are of great academic and practical importance in heterocatalysis. In this review, we mainly summarized the progress made in its catalytic application.

中孔分子筛在多相催化领域具有重要的理论研究和实际应用价值，综述了国内外的学者在其催化应用方面所取得的进展。

According to the shape of screening impurities to shoose hole-shaped sieve plate (move out long ,Diamond impurities)and the slit-shaped sieve plate (move out particles shape impurities and emplastic).

根据筛杂质的形状特点可以择孔形筛板（去长、菱形杂质）和缝形筛板（去颗粒形杂质和粘胶物）。

According to the shape of screening impurities to choose hole-shaped sieve plate(move out long, Diamond impurities) and the slit-shaped sieve plate(move out particles shape impurities and emplastic).

根据筛杂质的形状特点可以择孔形筛板(去长、菱形杂质)和缝形筛板(去颗粒形杂质和粘胶物)。