锇

In addition,the reaction of osmanaphthalene with different kinds of ligands gave new osmanaphthalenes.

最后研究了CO和不稳定的卡拜副产物的反应，得到CO配位的锇乙烯基化合物。

The ultrastructures of amyloplast development and proliferation in maize endosperm cell were observed using the method of glutaraldehyde-osmium tetroxide fixation.

采用戊二醛+锇酸双重固定法观察了玉米胚乳细胞淀粉质体发育和增殖的超微结构。

The ultrastructures of amyloplast development and proliferation in endosperm cell of maize were observed using the method of glutaraldehyde-osmium tetroxide fixation.

采用戊二醛+锇酸双重固定法观察了玉米胚乳细胞淀粉质体发育和增殖的超微结构。

After lentectomy through the pupillary hole, the epithelial cells at dorsal iris in Anuran tadpole of Bufo raddei Strauch can undergo transdifferentiation to regenerate a new lens. The morphological changes of lens formation from different regeneration stages were observed with both microcope and transmission electron microscope.

以无尾两栖类花背蟾蜍后肢芽期蝌蚪为实验材料，摘除其左眼晶状体，在再生不同时期固定，石蜡连续切片，苏木精-伊红对染，光镜观察，研究晶状体再生的组织来源；另外，选再生不同时期材料用戊二醛，锇酸固定，透射电镜观察，以研究晶状体再生组织的超微结构变化。

The left lens of Anuran Tadpole - Bufo Raddei Strauch Tadpole and Xenopus laevis Tadpole were removed when they had posterior limb bud. By decapitating and fixing it with Carnoy's fixation fluid in different days, by means of paraffin serial section and Hematoxylin-Eosin stain and by using the microscope to observe the microstructure of lens regeneration of Bufo Raddei Strauch Tadpole and Xenopus laevis Tadpole. By extirpating the left eye and fixing it with aldehyde and osmium acid , by using electron microscope to observe the ultrastructure of lens regeneration of Bufo Raddei Strauch Tadpole and Xenopus laevis Tadpole.

以无尾两栖类—以花背蟾蜍与非洲爪蟾后肢芽期蝌蚪为实验材料，摘除其左眼晶状体，在再生不同时期固定，石蜡连续切片，苏木精-伊红对染，光镜观察，研究晶状体再生的组织来源；另外，选再生不同时期材料用戊二醛，锇酸固定，透射电镜观察，以研究晶状体再生组织的超微结构变化。

The metal osmium is very stable in the air, the melting point is 2700 degrees Celsius, it does not dissolve in the ordinary acid, will not be corroded in the aqua regia.

金属锇在空气中十分稳定，熔点是2700摄氏度，它不溶于普通的酸，甚至在王水里也不会被腐蚀。

METHODS: Inexpensive quinine and cinchonine were transformed to 9NH2quinine and 9NH2cinchonine, which reacted with 4chlorobenzoyl chloride to afford 2 novel chiral ligands. The AD reactions of olefins were performed in H2OtBuOH (1∶1) using the 2 ligandsK2OSO24 as catalysts.

以价廉易得的奎宁和辛可宁为原料，经过结构转换得到9氨基奎宁和9氨基辛克宁，进而与对氯苯甲酰氯反应制得两种新型手性配体，并将其用于锇催化的烯烃的不对称双羟化反应。

The osmium hexachloroplatinate (OsPtCl6) and osmium oxide films exhibited one redox couple.

锇氧化物/锇铂氯化物薄具有一对氧化还原对的特性。

The electrochemical quartz crystal microbalance, cyclic voltammetry, and SEM were used to study the growth mechanism of the mixed of osmium hexachloroplatinate (OsPtCl6), osmium oxide and platinum films.

本实验使用电化学石英晶体微天平、扫描式电子显微仪及循环伏安法来研究锇氧化物/铂/锇铂氯化物薄膜的沉积与薄膜成长之机制及电化学特性。

Through the ReOs dating of molybdenite from quartz porphyry, the isochron age of (222.5±3.2) Ma and the model age of (222.1±3.2) Ma~(224.6±3.4) Ma were obtained, which means molybdenite formed in late Triassic.

通过对含辉钼矿石英斑岩中采集的辉钼矿样品进行铼－锇同位素年龄测定，获得铼－锇等时线年龄为(222.5±3.2) Ma，模式年龄变化于(222.1±3.2) Ma~(224.6±3.4) Ma，表明辉钼矿形成时代为晚三叠世。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。