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The process,using strontium nitrate and ammonium bicarbonate as raw materials to develop and produce high purity strontium carbonate is introduced.

介绍了以硝酸和碳酸氢铵为原料,研制生产高纯碳酸的工艺过程。

Some global consistent and comparable marine Sr isotope curves for the Phanerozoic have been established recently.

近年来,显生宙以来海水同位素的变化曲线不断得以补充和修正,已建立起具有全球一致性、可对比的海水同位素变化曲线背景值,为同位素的应用奠定了基础。

Strontium hydroxide;strontium carbonate;strontium-based compound

氢氧化;碳酸;含化合物

Purity control in producing metallic strontium using vacuum aluminothermic reduction was analysed by thermodynamic calculation.

对真空铝热还原法制备高纯金属的纯度控制进行了热力学分析;探讨了、钡和钙的临界还原温度、蒸气压等热力学参数差异,并制定了制备高纯金属的工艺。

Reaction mechanism of Sr preparation using vacuum aluminothermic reduction ;2. Purity control in producing metallic strontium using vacuum aluminothermic reduction was analysed by thermodynamic calculation.

对真空铝热还原法制备高纯金属的纯度控制进行了热力学分析;探讨了、钡和钙的临界还原温度、蒸气压等热力学参数差异,并制定了制备高纯金属的工艺。

Japanese eel, Anguilla japonica, is a catadromous fish, that spawned in the sea and migrating between sea- and freshwater. Otolith strontium / calcium ratio has been widely used for recording the migratory history of fish, but the interactive relationship between otolith Sr /Ca ratio and environment factors remained unclear.

鳗鱼为降海洄游型鱼类,一生当中会在淡水与海水之间洄游,近年来有相当多的研究利用其耳石钙比来回推鳗鱼洄游环境的历史,因此,本研究期由实验室的控制实验,验证盐度与饵料对鱼体组织钙比、耳石钙比及分配系数的影响。

Objective To determine the content of blood strontium for diagnosis of deathful causes of drowning and postmortem submergence. Methods The content of Sr content in the water sample of Nan Du River on Hainan Province, and in the left heart's blood sample of rabbits died of drowning, postmortem submergence were determined with ICP-XSP. The results were compared with that the controls.

目的 研究动物溺水死后不同时间血的变化方法以高频电感偶合等离子体光谱分析仪检测外样水体中离子含量,并分别测定家兔溺死与死后入水的左心血的含量。

The mechanical strength, solubleness and the capability to induce ossification of the materials could be improved obviously when strontium was added, which were formed of hydroxyapatite and tricalcium phosphate.

试验研究证实盐具有抗骨吸收和增加骨形成的作用,盐可以抑制破骨细胞的活性,促进成骨细胞的活性,促进骨盐的沉积;其与羟基磷灰石和磷酸三钙等复合后,其机械强度、溶解性及诱导成骨能力等特性明显得到改善;盐口服有治疗骨质疏松症的作用。

The three types of dolomite have similar strontium content with higher ~(87)Sr/~(86)Sr ratios to some extent than that of the coeval seawater.The difterenee of distribution coefficient of Sr in calciteand dolomite is the most important control factor on the strontium content in dolomites.

三种类型白云岩具有类似的含量,但其(87)~Sr/(86)~Sr 比值均不同程度地高于同期海水值,在白云石和方解石中分配系数的差别是影响白云石化过程中白云石含量最为重要的因素。

The nitrate and chlorate, very volatile, give off brilliant crimson flames and are used in flares, fireworks, and tracer bullet s.

卤化、硝酸和氯酸极易挥发,并能使火焰呈亮猩红色,用于各种照明弹、烟花和曳光弹中。

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I can still vividly recall the impressive scenes you gave. You were among my friends and relatives who accompanied me from my house to the seaport and when the porters were slow to show up, you obligingly carried my suitcase for me.

你对我的种种感人情意,使我记忆犹新,那天你随着我的亲友从家里送我上轮船,搬运工迟迟不来,你毅然替我提着皮箱上船。

St. Nicholas became the patron saint of Russia, where he was famous for his red cape, flowing white beard, and bishop's mitre.

圣尼古拉成了俄罗斯人的守护神,在那里,他以身披红斗篷,留着飘逸的白胡须,戴着主教法冠而闻名。

Long periods of seeming invincibility. Though some industries or lines of business exhibit characteristics that endow leaders with virtually insurmountable advantages, and that tend to establish Survival of the Fattest as almost a natural law, most do not. Thus, for every Inevitable, there are dozens of Impostors, companies now riding high but vulnerable to competitive attacks. Considering what it takes to be an Inevitable, Charlie and I recognize that we will never be able to come up with a Nifty Fifty or even a Twinkling Twenty. To the Inevitables in our portfolio, therefore, we add a few "Highly Probables."

在所属的产业都被赋予其无可取代的优势地位,大者恒存的自然定律似乎牢不可破,但实际结果却不然,也因此在找到真正的真命天子之前,旁边可能还有好几打假冒者,这些公司虽然曾经红极一时,但却完全经不起竞争的考验,换个角度来看,既然能够被称为永恒的持股,查理跟我早就有心理准备,其数量绝对不可能超过五十家或甚至是不到二十家,所以就我们的投资组合来说,除了几家真正够格的公司之外,还有另外几家则是属于极有可能的潜在候选人。