The system has its own style . the trapping beams can be independently adjustable and three double - passed circularly polarized cooling / trapping beams intersect at the center of mot . about 1 107 cesium atoms with equivalent temperature of ~ 270 k are successfully trapped in our vcmot 在每束冷却俘获光的光强约4 . 9mw cm ~ 2 、失谐量为- 10mhz 、轴向磁场梯度约11 . 6gauss cm的条件下得到的冷原子样品中典型的原子数约1 10 ~ 7个，温度约270 k左右。
The results are as follows : as the sputtering pressure increases , the atomic ratio of o to ti increase in the films , which is attributed to the fact that the absolute oxygen content increases , as the pressure increases despite the ratio of 62 to ar remains unchangless 结果发现：在氧气、氩气分压比不变的条件下，薄膜表面o和ti原子比增大，这可能是由于溅射气压增大，而氧气与氩气比未变，真空室中氧气的绝对含量增加，参加反应的氧原子数增加的缘故造成的。
Owing to the extremely small dimensions , nanometer materials are structurally characterized by a large volume fraction of grain boundaries or interphase boundaries , which exhibit some unique structural characteristics and novel properties with respect to the conventional coarsegrained polycrystalline materials 由于纳米粉体材料尺度极小，使之表面原子数、表面能急剧增加，产生了宏观物体所不具有的表面效应、小尺寸效应、量子效应及宏观量子隧道效应等新的性能。
The shake flask experiments showed that b . caryophylli ys13 could accumulate polyhydroxyalkanoates containing monomers ranging from 3 - hydroxybutyrate ( 3hb ) to 3 - hydroxydecanoate ( 3hd ) when cultivated on glucose and / or fatty acids . previous study of burkholderia strain showed that this strain possessed at least two pha biosynthesis pathways , one of which is similar with ralstonia eutropha ( type i pha biosynthesis pathway ) 摇瓶发酵研究表明， biysi3可以利用葡萄糖和多种脂肪酸作为碳源，合成从4个碳原子数的聚羟基丁酸（ phb ）到10个碳原子数的聚羟基癸酸（ phd ）在内的多种pha 。
On the basis of overall confirming the reasonableness of available method for calculating migrated component amount , the author has further improved the true constant component fixed calculation method proposed by the author in 2000 , i . e , the calculation of actual true migrated mass and atomic number of metasomatically atered rocks , by using two method of measuring rock density 摘要文章在全面论证已有组分迁移量计算法合理性的基础上，进一步完善了笔者2000年提出的真恒量组分恒定计算法，即：利用岩石的两种实测密度计算交代蚀变岩的实有真迁移质量及其原子数。
