查询词典 SR

SR-B, a colorless crystal antimicrobic compound, was extracted and purified from broth of marine actinomycete N331 isolated and screened from sea mud. Its molecular structure was characterized by MS and various NMR spectra.

从分离筛选的海洋放线菌N331的发酵液中分离、纯化得到一种无色结晶抗菌化合物SR-B，通过对其质谱、多种核磁共振谱的结构信息进行分析，鉴定其分子结构。

Auriferous quartz veins of Dongping gold deposit are dated by fluid inclusion Rb-Sr isochron methed at 103±4Ma.

用石英流体包裹体Rb-Sr等时线法测得东坪金矿床含金石英脉的年龄为103±4Ma，比该矿的蚀变岩型矿体晚50-70Ma。

In this study, Sr and Nd isotopic compositions of fluorites coexisting with cassiterite and sulfides from the ore veins were analyzed.

本次研究测试了该矿床中与锡石硫化物共生的萤石的Sr和Nd同位素组成。

Luying Cateye PCB traffic safety mark and SR series high power LED illuminating series earn social trust with good quality and long life-span, and market occupancy rate is increasing steadily.

公司研制的Luying Cateye路映猫眼PCB系列360°警示道路突起路标和SR系列大功率LED照明以其优良的品质，超长的寿命，赢得了社会的信赖，市场占有率逐步提高。

Point out as a result:the big perfoliate crack in the casting is disappeared after adding the Sr modification, but accompanying with the obvious increase of pinhole and shrink pine, theα(A1) dendritic crystal become more circinal and thin.

结果指出：加Sr变质后铸件中大的贯穿性裂纹消失，但是针孔、缩松明显增多，α枝晶变得比较圆整、细化。

One specific feature of SR-93 is that it can be easily conferted from right - to left-hand operation without tools (by re-installation of the bolt handle to the opposite side).

一个特定功能的SR - 93是，它可以很容易地conferted右-到左无手操作工具（通过重新安装螺栓处理到对岸）。

The content of major elements, such as Fe, Mg, Ca and Al, and trace elements, such as Ti, Sr, Ni, Cr and Co, is linearly correlated to that of SiO2, which suggests that the different volcanic rocks in the basin should be the product of fractional crystallization of congenetic magmas. The parental magma may be generated by the partial melting of an enriched mantle wedge formed by the metasomatism of slab-derived fluids in an active continental margin tectonic setting.

FeO、MgO、CaO、Al2O3、TiO2等主元素和Sr、Ni、Cr、Co等微量元素的含量与SiO2含量呈明显的线性相关关系，表明该区火山岩可能是同源岩浆分异的产物，岩石形成於活动大陆边缘的构造环境，并由遭受消减板块流体交代的富集地幔楔部分熔融而形成。

Geothermochronology based on mineral closure temperatures and geochronological methods such as U-Pb, Sm-Nd, Rb-Sr, Lu-Hf, Re-Os, 40Ar/39Ar, FT,/He, TIMS U-series, cosmogenetic nuclide (including 14C, etc.) and 3H/3He for young groundwater dating is reviewed in this paper.

简要介绍了基于矿物封闭温度的地质热年代学，并对多种地质年代学方法，包括U-Pb法、Sm-Nd法、Rb-Sr法、Lu-Hf法、Re-Os法、40Ar/39Ar法、裂变径迹测年、/He法、TIMS铀系法、宇宙成因核素定年（包括14C法等）和年轻地下水测年（如3H/3He法等）进行了综合评述。

The result showed that Si--Si covalent bond eAsts in the melt of eutectic and hyper--eutectic alloy and Sr has capability to weaken the coto bond.

结果表明，在共晶及过共晶的合金的液态结构中，存在着Si—Si共价键，Sr有削弱这些共价键的倾向。

In comparison with the host granite, the dioritic enclaves are higher in Fe, Mg, Ti, Ca and richer in HREE, Sr, but lower in Na, K, Si and poorer in Ba, Th, Hf, Zr.

与寄主花岗岩相比，闪长质包体的Fe、Mg、Ti、Ca含量较高，而Na、K、Si的含量较低；富HREE、Sr，贫Ba、Th、Hf 、Zr。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。