查询词典 vein

By studying the occurance of gold orebodies,the ore types and features and the alteration of wall rocks ,it is found that Xuyaogou gold deposit is a quartz vein-metasomatite type locating in the exocontact zone of Muhuding granodiorite.

通过对许窑沟金矿床矿体产出特征、矿石类型及特征、金的赋存状态以及围岩蚀变等的研究表明，许窑沟金矿是赋存于牧虎顶岩体外接触带的石英脉-蚀变岩型金矿床。

Objective: To know about the psychological state of gravida before undergoing prenatal diagnosis via umbilical vein puncture, so as to provide effective psychological nursing for them.

在B超引导下经腹行脐静脉穿刺是进行产前诊断直接获取胎儿血标本的一种安全、有效的方法。

Results: All 176 gravida safely lived through their peri-operative period of umbilical vein puncture in stable psychological state.

产前诊断技术在国内外广泛开展，这对于降低出生缺陷儿、保障出生人口素质、提高中国人口素质起着重要的作用[1]。

Seven wolframite separates from both topaz-quartz vein type and greisen block type tungsten ores were selected for Sm-Nd analysis.

云英岩型钨矿石中2件黑钨矿样品的ε(322Ma)值分别为5.93和4.24，与同时期亏损地幔钕同位素演化线值接近。

In contrast, the ε(322 Ma) values of five woiframite separates from the topaz-quartz vein ores range from -4.16 to -8.05, much lower than values of the greisen massive ore.

云英岩型钨矿石的形成作用与亏损地幔源岩浆活动有关，而黄玉－石英脉型钨矿石则很可能是壳源岩浆活动的产物。

In recent years, a number of tungsten polymetallic ore deposits were discovered in Guidong—Rucheng area, resulting in a remarkable breakthrough in the expansion of ore deposit type and ore deposit size. The ore deposits are of skarn type, altered granite type, structural alteration belt type, quartz vein type, greisen type, bedded type etc.

中文摘要：近年来在桂东-汝城地区发现了钨多金属矿床10余个，在矿床类型和矿床规模上均有较大的突破，矿床类型有：矽卡岩型、蚀变花岗岩型、构造蚀变带型、石英脉型、云英岩型、层控型等多种。

Quartz - vein type and greisen - type associated with tungsten, and porphyry - type are major types of Sn deposits, In recent few years, a new type of tin deposit- clastic altered rock type has been discovered, which made new development in tin - probing.

赣南地区是闻名于世界的钨锡矿产区，区内锡矿主要有与钨矿共生的石英脉型、云英岩型，斑岩型，隐爆层间裂隙带型等类型，近年来，又发现了锡矿新类型——破碎蚀变岩型，使本区找锡又有了新的进展。

The Maoping tungsten-tin deposit is located in the eastern section of Nanling metallogenic belt, the Chongyi-Dayu-Shangyou tungsten polymetallic ore concentration area and at the front part of the Tianmenshan rock mass extension with a north trend. Greisen and the quartz vein are the main tungsten-tin mineralization types in the mine area.

茅坪钨锡矿床位于南岭成矿带东段，位于崇－余－犹钨多金属矿矿集区西华山－杨眉寺区段中北部的天门山－红桃岭矿田，为天门山岩体向北倾伏延伸的前锋部位；矿区钨锡矿化类型主要有云英岩型和石英脉型两种。

Tin deposit types include the structural alteration zone type,altered rock body type,greisen type,porphyry type,quartz-vein type and alluvial type.

湖南骑田岭芙蓉矿田是近几年发现的超大型规模的锡多金属矿田，目前已发现锡矿脉40多条，锡矿类型有构造蚀变带型、蚀变岩体型、云英岩型、斑岩型、夕卡岩型、石英脉型、冲积型等多种。

Geochemical data, isotopic data and petrological observations all indicate that the greisen ores might have been formed by the mantle-related ore fluids, while the topaz-quartz vein ores were probably derived from crustal-derived magma fluids.

这一推论对於揭示本区钨矿床成矿作用本质和指导隐伏矿床找矿工作具有重要意义。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷