We often shake flour through a sieve.

们经常用筛筛面粉。

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

分析了惯性振动筛存在的问题 ,提出新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固体酸和几种分筛上氧化苯乙烯液相重排成苯乙醛的反应,考察了催化剂的活性、选择性和和稳定性。

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).

根据筛选杂质的形状特点可以选择孔形筛板（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).

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