宝石学

Obtains its physical property through the gemology convention test the related parameter, has carried on the division for the first time according to the albite jade\'s physical property reference jadeite\'s classification to the albite jade\'s idioplasm.

通过宝石学常规测试得出其物理性质的相关参数；根据钠长石玉的物理性质参照翡翠的分类首次对钠长石玉的种质进行了划分。

In this paper, a new jade called Qinglong jade , which got the nameaccording to its production area Qinglong county in Qinhuangdao city, isresearched autoptically.

本文对产于秦皇岛市青龙县的新玉种-青龙玉进行了实地调查，研究了青龙玉的矿物组成和玉石结构，分析了玉石的地质形成过程，测定了玉石的宝石学参数，估测了青龙玉的蕴藏量。

The jet samples are more compact than the coal samples because the honeycomb-like apertures of coal are filled with a large number of resinite arid gelatin for gelatination resulting in the changes of loose structure.

煤精与煤的产出环境相似，但宝石学特征差异较大，推断前者的成玉机制主要是由于含有大量且具有胶结作用的树脂体和凝胶体充填了煤的蜂巢状孔洞中，使煤较疏松的结构发生了改变而形成。

Research on the origin and occurrence of gems and jades is one of the hottest topic in geology, gemmology and archaeology.

宝玉石产地来源的研究是近几年地质学、宝石学和考古学界的热门话题之一。

The technology used in the Bubble Tag has already been approved by authorities such as the Swiss Institute of Gemmology or the French Ministry of Industry for and is currently used on many official documents, high value branded products and valuable works of art worldwide.

Bubble Tag中采用的技术不仅已得到许多权威机构的批准，比如：瑞士宝石学研究所或法国工业部，而且目前也在世界各地的许多官方文件、高价品牌产品和贵重艺术品中得到应用。

Etc.Sometimes, omphacite or kosmochlor can be the major mineral.The writer has been engaged in gem testing and gemmology education for nearly 30 years

笔者从事珠宝鉴定及宝石学教育工作接近三十年，幸运地有机会在实验室里接触及操作多种

Applied gemmology.

应用宝石学。

The jet samples are more compact than the coal samples because the hon eycomb-like apertures of coat are filled with a large number of resinite and gelatin for gelati nation resulting in the changes of loose structure

煤精与煤的产出环境相似，但宝石学特征差异较大，推断前者的成玉机制主要是由于含有大量且具有胶结作用的树脂体和凝胶体充填了煤的蜂巢状孔洞中，使煤较疏松的结构发生了改变而形成。

English Description To probe the mystery of eternity, to searach for the answer of nature, is the charismatic power of learning inside gemology circles.

Chinese Description 探究永恒的奥秘，追寻自然的真相，是宝石学中最令人痴狂的学习动力。

Its color can effect the beautiful decorative materials; black can be a touchstone; some can also be used jade. 2, in gemology, the corner stone with a limited angle word meaning rock, and sometimes also used to refer to Bristol stone or flint.3, angular stone, the middle finger in paleontology is a kind of fossil cephalopods name.

其色彩美丽者可作用装饰材料；黑色者可作试金石；有的也可用于玉雕。2、在宝石学中，角石一词具有不限于角岩的含义，有时也用于指碧石或燧石。3、角石，在古生物学中指的是一种头足类动物的化石名称。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。