查询词典 sieve

The results displayed the symplasmic isolation of sieve element/companion cell complex from the surrounding parenchyma cells, and suggest that the photoassimilate unloading from phloem follows an apoplasmic pathway and must be facilitated via the sugar transporters.

由此可见，苹果果实韧皮部组织同周围薄壁组织存在共质体隔离，同化物必须通过糖转运蛋白的介导从筛分子以跨越质膜的方式卸出到质外空间，然后再装载到周围薄壁细胞中。

Activated carbon fiber composite molecular sieve is a novel composite adsorbent with a number of peculiar properties such as well developed micropore structure,large surface area and good electrical conductivity.

活性炭纤维基复合炭分子筛材料作为一种新型的吸附材料，具有丰富而发达的微孔结构、大的比表面积和优异的导电性能，这些性质使其具有独特的气体分离性能。

The drum sieve is made of corrugated iron with strip-shaped holes, which is folded to rotundity .

筛网由有条形孔的波形钢板制成并折成筒形。

The particles of fly ash are separated by sieve method The fly ash of different size distribution is ground by traditional mill The effect rule of traditional grinding method on different particles of fly ash and the mechanism of improvement on quality of fly ash are discussed The results show that traditional grinding affects on crassitude particles actively but not fine particles .

将通过筛分得到的不同粒径范围的分选灰分别用普通球磨机磨细，探讨普通磨细方式对不同颗粒组成的粉煤灰的影响规律及其提高粉煤灰品质的机理。

At the end of the 1990s, there is breakthrough progress in the phenol-acetone process of the world. Especially development of molecule sieve catalyst for cumene is not only of progress of the technique ,but also possibility of clean-production, Also, sythesization and purification of phenol-acetone have been get improvement largely.

九十年代末，世界苯酚丙酮生产技术有了突破性的进展，尤其是分子筛催化剂合成异丙苯技术的开发，不仅是技术的飞跃，而且实现了清洁生产；加之苯酚丙酮合成与精制技术也在不断改进，使装置产品产率和质量进一步提高，物耗能耗大幅度下降。

Compared with the corresponding mesoporous molecular sieve, SBU-MCM-41 showed higher above 68% catalytic activity for cumene cracking and exhibited better hydrothermal stability.

与相应的中孔分子筛相比，SBU-MCM-41的酸性增强，异丙苯裂解反应活性提高了68％以上，并且水热稳定性也有一定程度的改善。

Cyclosis The streaming of cytoplasm in a circular motion around the cell observed in some plants, particularly young sieve tube elements.

胞质环流：在一些植物细胞特别是在幼筛管分子中观察到的细胞质围绕细胞的环形流动的现象。

We also will release a new DAT file for sieve at that time.

到时我们也会发布一个新的 DAT 文件。

He tried to piece it all together, to go back to the normal pattern of life a few short days ago before the sieve and the sand, Denham's Dentifrice, moth-voices, fireflies, the alarms and excursions, too much for a few short days, too much, indeed, for a lifetime.

他试图把所有的碎片连在一起，回到过去，回到筛子和沙子的年代，回到德汉姆牙膏、蛾的声响、萤火虫、喧闹和骚动，几天里发生了太多的事情，当然，对于他的整个所谓人生而言。

According to the experiment of minitype hammer no-sieve disintegrator,we analyze the effect factor of machining granularity.

对小型锤片式无筛粉碎机进行粉碎试验，分析比较了影响加工粒度的因素。

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