sieve 雅思GRE专八

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.

析了惯性振动筛存题 ,提出新型变频液压直线振动筛应用 ,并详细介绍了液压激振理论成果。

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型固体酸和几种筛上氧苯乙烯液相重排成苯乙醛反应,考察了催剂活性、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.

中孔筛多相催领域具有重要理论研究和实际应用价值，综述了国内外学者其催应用方面所取得进展。

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)。