锶

The results show that the thermal expansion coefficient, dielectric constant and hardness of the composites increase with the increase of Sr-celsian content.

摘 要：采用电子陶瓷工艺制备了一系列玻璃/锶长石陶瓷复合材料，并对复合材料进行X射线衍射分析、扫描电镜观察和性能测试。

Global correlation for strontium isotope curve in the Late Cretaceous of Tibet and dating marine sediments.

西藏晚白垩世锶同位素曲线的全球对比及海相地层的定年。

The formation of α-quartz and cristobalite in the composites containing above 50% ceramic content during the sintering process has bad effect on thermal expansion behaviour, but has little effect on the values of dielectric properties of the composites.

锶长石含量大于50%的复合材料中α石英和方石英的析出增加了材料的热膨胀系数，但对材料的介电性能影响不大。

It is obvious that shells have higher capacity to decontaminate the pollution of 89Sr from water.

可见，贝壳类动物对水系中的放射性锶有较强的去污能力。

The prepared plumbic strontium titanate is the ferroconductive film with component gradient, the dielectric constant and saturation polarization of which is improved.

所制备的钛酸锶铅是具有成份梯度的铁电薄膜，其介电常数和饱和极化强度与一般铁电薄膜相比都得到了很大提高。

It is difficult to explain the origin of crystalline dolomite by traditional dolomitization mechanisms. The diagenesis of the Feixianguan carbonates should be governed by some kinds of marine fluids rich in strontium and poor in manganese.

具有海源色彩的高锶、低锰成岩流体在很大程度上控制了飞仙关组碳酸盐的成岩作用，其来源与成因值得进一步关注，控制其运移、封存和发生水—岩反应的时空机制有待回答。

However,very low Mn contents(average 19.8ppm),relatively high Sr contents(average 137ppm)and the homogenization temperatures measured in fluid inclusions of crystalline dolomite do not support the hypothesis that meteoric water as high as 94% involved the dolomitization.

但极低的锰含量、相对较高的锶含量和包裹体均一化温度等资料均不支持有94%的大气淡水参与了结晶白云岩的白云石化作用，其白云石化流体应是埋藏成岩过程中囚禁的近同期、但是非同期的海源流体，其来源可能与埋藏成岩过程中该时间段蒸发盐的溶解有关。

Barium strontium titanate shows high dielectric constant and low dissipation factor and holds great promise for wide applications in dynamic random access memory, transducer and infrared detector.

钛酸锶钡薄膜具有较高的介电常数和较低的介质损耗，在动态随机存储器、传感器、探测器等方面应用前景广阔。

Recognized the regional geological history and the lack of external Sr sink epidote among the hydrothermal mineral assemblages, we refered that the Rb-Sr isoehron isotope date was the hydrothermal ore formation age.

因此本文通过Rb-Sr等时线所确定的250±20Ma同位素年龄具有地质意义，结合对区域地质演化史的基本认识及金矿石热液蚀变组合的研究(易捕获外来锶的绿帘石不发育)，该同位素年龄代表热液成矿年龄。

Ericson (1985) first proposed strontium isotope ratio in human tooth enamel and bone to identify migration and the geologic origins of immigrants. Since then, the method has been thought highly by many archaeologists.

自从1985年Ericson首次提出利用人类牙釉质和骨骼中的锶同位素比值来研究人类的迁移情况和外来人口的来源地之后，这个方法就受到了考古学家的重视。

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。