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grain grade
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  颗粒级配
     The specimens of sifted coal gangue with different particle size were admixed with Portland cement to prepare the coal gangue-cement system with different grain grade.
     通过筛分得到不同颗粒级配的煤矸石,将其与硅酸盐水泥进行混合,得到具有不同颗粒级配的煤矸石-水泥体系。
短句来源
     The results suggested that the increasing of the content of the particles less than 40μm of coal gangue were helpful to improve the early strength of coal gangue-cement system,while the particles less than 1μm might be harmful,so the reasonable grain grade was very important.
     结果表明:增加煤矸石中40μm以下颗粒含量有利于提高煤矸石-水泥体系的早期强度,但过多的提高煤矸石中1μm以下颗粒含量未必对提高煤矸石-水泥体系的3d强度有利,合理的颗粒级配很重要;
短句来源
  晶粒度
     It is found that the austentic grain grade by OLTM is smaller 2.5-3 ASTM than that by direct sizing, the properties of 40Mn2V steel by OLTM are the longitudinal toughness Ak≥23J,σ0.5≥555Mpa, σb≥820Mpa, elongation δ5≥23%, matching the property demands ofAPI Standard about N80 grade oil casing.
     结果表明:40Mn2V钢经在线形变热处理后,奥氏体晶粒度较直接定径工艺提高2.5~3级,生产无缝钢管的纵向冲击功Ak≥22J,σ0.5≥555MPa,σb≥819MPa,延伸率δ5≥23%,满足API标准对N80石油套管的性能要求.
短句来源
     It is indicated through study that when the grain grade of stainless steel wire is between 5.5~7,its ability of cold heading can satisfy the engineering demand.
     研究指出 ,钢丝晶粒度为 5 .5~ 7级则其冷镦性能可满足使用要求。
短句来源
     The chemical composition, mechanical properties, microstructure, surface quality and inclusion of the wire rod are analyzed. The results show that the grain grade of 55SiCrV spring steel wire rod developed by Baosteel is over grade 8, the sorbitizing rate is over 85%, the nonmetal inclusions are fewer, the purity of steel is high.
     对线材的化学成分、力学性能、金相组织和表面质量、夹杂物等方面进行了分析,结果表明,宝钢开发的55SiCrV弹簧钢线材的晶粒度超过8级,索氏体化率达到85%以上,非金属夹杂物少,钢质纯净度高。
短句来源
     the grain grade of imported wearable steel wire is from 6 to 7,the microstructure is tempered sorbite,no decarbonization phenomenon almost,while the grain of the microstructure of homemade 65Mn steel wire for card clothing is disordered,the carbide particles are incomplete conversion,the dispersion degree is not high.
     进口耐磨钢丝的晶粒度为6~7级,组织为回火索氏体,几乎无脱碳现象,国产65Mn针布钢丝的组织晶粒混乱、碳化物颗粒转变不完全、弥散度不高。
短句来源
     The results show that there are higher grain grade and hardness,lower dilution and better performance of resistance to abrasion,wear and anti-erosion in the laser cladding layer.
     激光熔覆层中的组织晶粒度和硬度高,稀释率低,抗摩擦磨损和抗腐蚀性能好;
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  “grain grade”译为未确定词的双语例句
     Guangxi air-blade-grade kaolin has more content of Al2O3 and less content of Fe2O3 and TiO2.The granularity is very small and the amount distributing statistics shows that the grain grade less than 1.0μm exceeds 97% and the average granularity is only 0.255um.
     广西气刀土原料Al2 O3含量较高 ,Fe2 O3、TiO2 含量小 ; 粒径微细 ,数量分布统计结果显示 ,≤ 1.0 μm粒级达 97%以上 ,平均颗粒仅 0 .2 5 5 μm。
短句来源
     Comparing with the phenomenon of heavy grain between the high temp bolting forging steel and rolling steel 20 Cr1Mo1VnbTiB,the reason of heat9,grain's creation was analyzed and methods for grain grade controlling were given,as well as the theory of solving heavy grain phenomenon in the steel 20 Cr1Mo1VnbTiB was supplied.
     通过对高温螺栓钢20crlMolVNbTiB 锻材与轧材粗晶现象的对比,分析了粗晶现象的产生原因,提出了控制粗晶级别的方法,为解决20CrlMolVNbTiB 钢的粗晶现象提供了理论依据。
短句来源
     The sedimentation granularity distribution was charactered by there-peak states,thick silt of 4.85—5.10Φgrain grade composed first main peak,medium sand of 1—1.25Φgrain grade composed second main peak,and clay composition of 10.25—10.5Φgrain grade composed third main peak.
     粒度分布呈现三峰态特征,4.85—5.10Ф粒级组成第一主峰,1—1.25Ф粒级为第二主峰,10.25—10.5Ф粒级形成第三主峰;
短句来源
     The sedimentation granularity distribution was charactered by multi-peak states,coars sand silt of 4.85-5.10Φ grain grade composed first main peak,occupying about 7.4%,medium sand of 1-1.25Φ grain grade composed second main peak,occupying about 1,29%,and clay composition of 10.25-10.5Φ grain grade composed third main peak,occupying about 0.52%.
     沉降物粒度为多峰态分布,29.16~34.67μm粒级的粗粉砂组成第一主峰,含量约占7.4%,420.45~500μm粒级的中砂组分组成第二主峰,含量约占1.29%,而0.69~0.82μm粒级的细粘土组分形成第三主峰,含量约占0.52%。
短句来源
     For the coarse aggregate of single grain grade, the bigger the size difference is, the higher the strength and the worse the permeability of the prepared pervious concrete.
     单粒级粗骨料幅差越大,配制的透水混凝土强度越高,透水性越差;
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  grain grade
The grain grade index denotes the proportion of fully filled spikelets recovered at 1.18 specific gravity to the total number of spikelets formed.
      
Wheat resistance to common bunt is a highly desirable trait for environmentally friendly grain grade protection.
      


Hundreds of years ago, the diamond was found in western part of Hunan province. Since 1954, geological prospecting has been carried out by teams under the leadership of the Ministry of Geology and has covered an area about 1.5 hundred thousand square kilometers. The placer was the sole object of prospecting during the period from 1954 to 1960. After that, most labours and investment have been contributed to the exploration for lode diamond deposits of kimberite type. But none of commercial interest has been...

Hundreds of years ago, the diamond was found in western part of Hunan province. Since 1954, geological prospecting has been carried out by teams under the leadership of the Ministry of Geology and has covered an area about 1.5 hundred thousand square kilometers. The placer was the sole object of prospecting during the period from 1954 to 1960. After that, most labours and investment have been contributed to the exploration for lode diamond deposits of kimberite type. But none of commercial interest has been gained so far. Based on the theory of diamond geology, the results of explorations, and qlenty informations of field geology, some evidences, considerations and conclusions obtained can be summerized as follows. 1. Placer diamonds are not only wide-spread in the drainage area of Yuanshui and its tributaries, but also scattered in its adjacent areas---the valleys of Lishui, Zi-shui, Xiangshui, Wujiang, Duliujiang, and Hongshuihe as well as Tayao mountains of Guangxi. It is obvious that the distribution of placer diamonds is neither controlled by geomorphology, nor confined to any special tectonic unit. They are highly disseminated in the Quarternary sand and gravel beds. Strickly speaking, no placer deposits of ordinary quality presents in this region. The so-called spoon-like placer deposits located at Changde and Taoyuan counties of Hunan Province are rather small and poor. 2. Pyrope is an intimately associated mineral with diamond in kimberite. Therefore, it is regarded as an useful and favourable indicator for diamond explora-tion. However, it was hardly found in this region, either in the Quarternary or in pre-Quarternary sediments. There is an exception in Maping Creek where the pyrope content in sediments comes to hundreds of grain per cubic meter. 3. The region between Zhenyuan and Sanshui counties of Guizhou province is a region of meta-alkaline ultrabasic rocks which consist of 13 rock belts with hundreds of dike and sill. The major rock-species are prowersite and porphyrite-mica-peridotite. Maping micaceous kimberite may be the extreme member of this rock complex. Both No. 1 and No. 2 of Maping micaceous kimberite bodies are small dikes and occur in the limestone and dolomitic limstone of Upper Cambrian They are rich in pyrope and yield a few diamonds of fine grain grade. The average weight of grains is only 0. 17mg. such dikes are unprofitable and make no influence on present distribution of diamond in Yuanshui drainage. In Zhengyuan and Sanshui counties of Guizhou Province, it is possible to find some new dikes or sills with similar characters, but no profitable pipe would be expected to find out. 4. The discovery of secondary sources of diamond, a great achievment of prospecting works has been made recently. The secondary sources, five different age horizons of clastic sedimentary rocks containing diamonds have been recognized. They are: (1) the tillite beds of Changan Formation of Lower Sinian from the juncture of Hunan, Guizhou and Guangxi; (2) The quartzitic sandstone beds of Lianhuashan Formation of Lower Devonian; (3) The sandstone and conglomerate beds of Yujiang Formation of Lower Devonian and Bangzhai Formation of Middle Devonian from northern and central Guangxi and Guizhou; (4) The arkosic sand-stone, siltstone beds of Upper Triassic. and Jurassic, from Jingxian Basin south-western Hunan; and (5) The red beds of Cretaceous and Lower Tertiary distributed mainly along Yuanshui valley and in the surrounding area of Tongting Lake. The five secondary sources seem to be the transfer-stations on the long way of diamond traveling. Some diamonds have been distintegrated from them. They found their homes in Quarternary sediments and finally made up a complicated and uncomprehensible pattern of diamond-diffusions. It may interpret why the panning technique along river system produces little effect. 5. According to theory on genesis of diamond deposits, the author regards that it seems to be impossible to look for the profitable kimberite pipes in the tectonic unit with folded basement. Yangtze Platform (especially Jiangnan anteclise) is just one of this kind unit. 6. It may be no doubt that the tillite of Changan Formation of Lower Sinian is the major source of diamond in the studying region. The author has also discu-ased the possibilities and ways to searching pre-Sinian primary diamond deposits.

据民间传说,湘西金刚石的发现已有几百年历史。建国后,自1954年开展金刚石地质工作以来,普查面积已达15万平方公里。1954至1960年间,砂矿是唯一的工作对象;此后则把大量人力、财力投于寻找金伯利岩型原生矿。但直至目前,湘、黔、桂三省(区)尚未发现有价值的金刚石原生矿床。根据金刚石地质学原理、普查成果和大量的野外地质资料,已获得一些证据、见解及结论,现概括如下: 1.金刚石不仅较广地分布沅水流域各地,而且也零星散布于相邻地区,譬如澧水、资水、湘水、乌江、都柳江和红水河诸流域的一些地点,还有广西的大瑶山区。可见它的分布明显不受地貌控制,也不局限于某一特定的大地构造单元。同时又高度分散于第四纪砂矿中。严格地说,本区并不存在名符其实的砂矿床,产于湖南常德、桃源两县的勺形砂矿(也称细谷砂矿),毕竟很小且贫。 2.镁铝榴石是金刚石在金伯利岩中密切共生的矿物,常作为寻找金刚石矿的指示性矿物。但在本区第四系或前第四系里都很难找着,唯一的例外是马坪小溪,那里的镁铝榴石在沉积物里的含量可达几百颗/立方米。 3.贵州镇远、三穗两县间,是一个偏碱性超基性岩岩区,可分出十三个岩带,共有岩墙、岩床几百个。主要岩类是橄辉云煌岩和斑状云...

据民间传说,湘西金刚石的发现已有几百年历史。建国后,自1954年开展金刚石地质工作以来,普查面积已达15万平方公里。1954至1960年间,砂矿是唯一的工作对象;此后则把大量人力、财力投于寻找金伯利岩型原生矿。但直至目前,湘、黔、桂三省(区)尚未发现有价值的金刚石原生矿床。根据金刚石地质学原理、普查成果和大量的野外地质资料,已获得一些证据、见解及结论,现概括如下: 1.金刚石不仅较广地分布沅水流域各地,而且也零星散布于相邻地区,譬如澧水、资水、湘水、乌江、都柳江和红水河诸流域的一些地点,还有广西的大瑶山区。可见它的分布明显不受地貌控制,也不局限于某一特定的大地构造单元。同时又高度分散于第四纪砂矿中。严格地说,本区并不存在名符其实的砂矿床,产于湖南常德、桃源两县的勺形砂矿(也称细谷砂矿),毕竟很小且贫。 2.镁铝榴石是金刚石在金伯利岩中密切共生的矿物,常作为寻找金刚石矿的指示性矿物。但在本区第四系或前第四系里都很难找着,唯一的例外是马坪小溪,那里的镁铝榴石在沉积物里的含量可达几百颗/立方米。 3.贵州镇远、三穗两县间,是一个偏碱性超基性岩岩区,可分出十三个岩带,共有岩墙、岩床几百个。主要岩类是橄辉云煌岩和斑状云母橄榄岩;镇远马坪的云母金伯利岩,可能是前二者的端员岩类。马坪1号、2号云母金伯利岩体都是小岩墙,产于晚寒武世的灰岩、白云质灰岩中,富含镁铝榴石,产极少量细粒级金刚石,平均粒重仅0.17毫克。这类岩墙都无工业利用价值。在镇远、三穗一带,固然有可能找到类似的岩墙或岩床,但不能指望找到可供利用的岩管。 4.金刚石次生源在本区的发现,是普查工作的重大成就。鉴别出来的五个次生源,都是属于不同时代、略含金刚石的碎屑岩地层。它们是:(1)早震旦世长安组里的冰碛层,分布于湘、黔、桂毗邻区;(2)早泥盆世莲花山组石英砂岩;(3)早泥盆世郁江组和中泥盆世邦寨组砂砾岩。(2)、(3)多见于桂中、桂北及黔南等地;(4)湖南靖县盆地晚三叠世至侏罗纪的长石砂岩、粉砂岩等;(5)广泛分布于沅水中、下游及滨湖地区的白垩纪至早第三纪红色岩层。五个次生源似乎是金刚石长途旅行中的“转运站”,金刚石不断地从各次生源解离出来, 并在第四系找到归宿,从而构成了一幅既复杂又难理解的金刚石扩散图。由此也可知道,采用淘选技术追溯河流找矿,为什么成效不显著的原因。 5.根据金刚石矿的成因学说,作者认为,在具有褶皱基底的大地构造单元,似乎不存在可供利用的金伯利岩岩管的前景。本区所在的扬子地台(尤其是江南台背斜),正是这样的单元。 6.长安组里的冰碛层无疑是本区金刚石的主要来源。作者也讨论了探索前震旦纪金刚石原生矿的可能性和途径。

Analysis of grain grade is widely used in geology for studying sedimeust transimition and sedimental environments. Besides the conventioned sieve analysis, there occure some new methods, such as computer-controled IAS-FLUS image analysis instrument and the microscope combined with WDJ.But wich one is the most economically benificial method and how to improver the analytical speed and precision.In this study, some different samples have been analysed with the three methods and the results fiave been coprnared.Some...

Analysis of grain grade is widely used in geology for studying sedimeust transimition and sedimental environments. Besides the conventioned sieve analysis, there occure some new methods, such as computer-controled IAS-FLUS image analysis instrument and the microscope combined with WDJ.But wich one is the most economically benificial method and how to improver the analytical speed and precision.In this study, some different samples have been analysed with the three methods and the results fiave been coprnared.Some conclusions obtained as follow:1. Sieve analysis is suitable for cohesionless sandestone especially for wind, river, lake-formed sandstone after Cenozic and Mesozoic,2. TAS-PLUS image aualysis instrument is beter for quartz-sandstone, fundamentally cemented saudstone, striped sandstone and differently lighted sandstone.

碎屑岩沉积物的三种粒度分析方法即筛析法、图象法、和颗粒计数法。通过同一样品三种方法试验得出可比性,应用概率累计曲线图及参数说明符合率。文中评价了各种方法的优缺点和适用范围,以期达到根据条件选择方法的目的。

As a glacial deposit, the Luoquan Formation has been paid more attention to by the geonony circles. By means of the sedimentary strata sequences and through analyzing the grain grade and the sedimentary environment,the authors preliminarily consider that whether it is a glacial deposit or the products of the glaciation-gravity flow reconstruction, it must be the alluvial fan of the off-shore slope.

罗圈组作为冰川沉积物,已为地学界所重视。作者从地层层序、粒组分析和沉积环境等沉积学角度分析,初步认为它不管是冰川沉积物或是冰川—重力流改造沉积物,均应属水下岸坡冲积扇的沉积物。

 
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