查询词典 tuff

Qingtian stone by the rhyolitic tuff and to open by the petrochemical kaolinite formed mainly used as printing stone, some also used for carving.

青田石系由流纹质凝灰岩经高岭石和地开石化而成，主要被用作印石，部分也用于工艺雕刻。

Based on a systematic petrographic and geochemical study and a zircon U-Pb SHRIMP age analysis, the authors revealed that the age of ore-hosting volcanics (XC01-1 rhyolitic tuff) is 180.4±3.5 Ma.

对西藏冈底斯带南部雄村铜金矿床的容矿火山岩和外围岩石进行了岩石学、地球化学、锆石年代学研究。

Xiangshan volcano-intrusive complexes is the wall rock of the biggest volcanic-rock uranium ore deposit in China, and the main body is rhyolitic porphyroclastic lava, accompanied by hypahyssal or ultra-hypabyssal intrusive rocks such as dacite-porphyry and granite-porphyry Jiulongzhang volcano-intrusive complexes are dominantly rhyolitic welded tuff, accompanied by dacite-porphyry and quartz monzonite-porphyry, and so on, and the uranium resources are being assessed.

相山火山－侵入杂岩是华南地区最大的火山岩型铀矿赋矿围岩，其主体岩石为流纹质碎斑熔岩，浅成－超浅成侵入岩有英安斑岩、花岗斑岩等；九龙嶂火山－侵入杂岩的铀资源潜力尚待评价，主体岩石为流纹质熔结凝灰岩，浅成－超浅成侵入岩有英安斑岩、石英二长斑岩等。

We can see copper-bearing asphalt amygdaloidales in the basalt lava and stockwork of native copper in the carbon-rich tuff. There area so much carbon in the ores that people only can see the native copper aggregate after splitting and polishing the ores.

最近，在该熔岩层上下的凝灰岩中鉴别出难识别矿化类型，即与沥青和有机质碳紧密伴生的富铜矿石，甚至在气孔状熔岩中发现呈杏仁体含铜沥青，因而可能构成大规模矿化。

The main body of the outcropping rock layer is composed of deep gray trachyte of Baitoushan formation of mid-Pleistocene series and yellow, brown yellow volcanic-tuff crust of weather. This kind of structure that weak layers and hard layers emerge alternately contributes to the instability of rock mass.

长白山一带出露的地层主体为中更新统白头山组深灰色粗面岩及黄色、褐黄色火山凝灰岩、火山灰风化壳，这种软硬相间的层状地层组合为岩体的失稳创造了条件，岩体失稳产生的堆积物为泥石流准备了充足的固体物质。

Igneous stratum can be divided into three belts, from east to west it lays igneous rock belt, transition rock belt and sedimentary rock belt, from lower to upper it lays tuff belt, trachyte belt and basalt belt.

研究发现火山岩系在横向和纵向上都可划分为三个带，横向由东到西为火山岩带、过渡带、正常沉积岩带，纵向自下至上分为凝灰岩带、粗面岩带、玄武岩带。

The Machadodorp tuff and agglomerate, which is higher-lying than the Ongeluck lave, is known only from the Eastern Transvaal

层位较昂格鲁克岩流为高的马却多多普凝灰岩及集块岩，只见于德兰士瓦东部。

The adsorption characteristics of 237 Np on crushed tuff and tuffaceous sand from northeast Japan have been studied using sequential extraction analysis technique.

用连续提取法研究了2 37Np在破碎凝灰岩和凝灰质砂上的吸附。

Field geological investigation, petrology and geochemistry study showed that three oil shale groups in Kazuo basin were developed in Member 1,2,3 of the Jiufotang Formation of Lower Cretaceous, the third oil shale group located in 3rd member have the greatest industrial significance. Oil shale always has the accompanying relationship with overlying sedimentary tuff or other tuffaceous strata.

野外地质调查和岩石学、地球化学研究表明：喀左盆地3个油页岩层群分别发育于下白垩统九佛堂组的一、二、三段，以位于三段的第三油页岩层群的工业意义最大；油页岩常与上覆沉凝灰岩或其它凝灰质岩石呈伴生关系。

Bao ancient group plans for a major deep-sea - half of the deep gray and gray-black TLC tuffaceous siltstone, shale tuffaceous, with gray green, with thin gray-tuff interbedded uneven.

包古图组主要为一套深海―半深海相的灰、灰黑色薄层状凝灰质粉砂岩、凝灰质泥岩，与灰绿色、灰色薄层状沉凝灰岩不均匀互层。

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。