Method of development for developable surface and its application

At present, the research is limited in some special surface as developable surface, the research in free-form surface has no success in theory and method.

目前这方面的研究局限于一些特殊曲面，如可展曲面，对自由曲面则无系统的理论和方法。

A developable surface is one that can be made from a flat sheet without any in-plane strains.

可展曲面是一个可以由平板在不发生任何面内应变的条件下弯成的曲面。

Curves classified by their rectifying developable

曲线按其从可展曲面分类

In order to guarantee the deuteron beam can be smoothly transport to the target, the beam envelope of pulse line was calculated by the Transport and LEADS program.

为保证氘束流能够顺利传输到靶，使用Transport和LEADS两种束流光学程序计算脉冲束线的束流包络图。

A study on detrital minerals in the sediment of the Great Wall Bay

长城湾沉积物中碎屑矿物的初步研究

The Palaeoproterozoic Erdaowa Group distributed in the north Hohhot, Nei Mongol is composed of metamorphic detrital sediment and carbonate with intermidiate basic volcanics.

出露于内蒙古呼和浩特北部的二道洼群，为一套陆源碎屑岩碳酸盐岩夹中基性火山岩变质建造。

The occurrence of fault surface and combination of boundary faults in the steep or gentle slope zones controlled the injecting directions of detrital sediment source.

陡坡带与缓坡带边界断层的断层面产状和断层组合控制着物源注入方向。

THE INDICATION OF CONTINENTAL DETRITAL SEDIMENT TO TECTONIC SETTING A study on detrital minerals in the sediment of the Great Wall Bay

盆地陆源碎屑沉积物对源区构造背景的指示意义长城湾沉积物中碎屑矿物的初步研究

The time comparison between the detrital sediment and the upheaval of mountains around Tarim Basin

晚新生代以来塔里木盆地周缘碎屑沉积物与周缘山系隆起时代对比

The significance of the heavy mineral provinces in horizontal strata correlation, and in indicating sedimentary environment and detrital sediment features and sources are also discussed.

文章还探讨了重矿物组合分区对横向地层对比、沉积环境、碎屑沉积特征和物质来源的意义。

The Latest Development in Flow Units of Detrital Reservoir

碎屑岩储层流动单元研究的新进展

Two reservoir types are detrital reservoir rock and carbonate reservoir rock.

塔东地区储层类型包括碎屑岩和碳酸盐岩两大类。

Introduces the imaging logging interpretation applied in West Sichuan detrital deposit microfacies analysis, terra stress analysis and crack identification.

介绍了成像测井解释在川西碎屑岩沉积微相分析、地层应力分析、裂缝识别中的运用。

About 29 thin sections were used to analysis the detrital and authigenic mineral composition and content.

对29个样品进了薄片分析和鉴定，确定了碎屑颗粒和自生矿物的成分和含量。

The ore-bearing rock of the Xiaowenshan detrital mica mineral is a set metamorphic rock that main body rock is muscovite K-feldspar gneiss.

小文山碎云母矿的含矿岩石是一套以白云母钾长片麻岩为主体的变质岩，原岩为富硅高钾、低钙低镁的粘土质砂岩。

The multi-element regression analysis can be used to quantitatively express and predict the controlling effect of detrital mineral combination over the porosity of sandstone reservoir.

通过多元回归分析，可以定量表达和预测矿物组分对储集层孔隙度的影响。

Its composition of detrital mineral was felsic mainly from upper crust.

其碎屑母岩应主要源自上地壳，以长英质成分为主。

On the one hand, the flow of the meteoric water in the multiporous media leads to the infiltration and reprecipitation of the detrital mineral and diagenetic mineral;

一方面，大气水在多孔介质中的流动导致碎屑矿物和成岩矿物的淋滤和再沉淀；

The Quanxin gold deposit is metamorphic detrital rock type gold deposit, its mineralized types include auriferous quartz vein type and fractured altered rock type.

全鑫金矿为变质碎屑岩型金矿床，矿化类型可分为含金石英脉和破碎蚀变岩型。

Yangshan gold deposit situated in Gansu province is a super-large micro-disseminated gold deposits hosted in Devonian metamorphic detrital rock.

甘肃省阳山金矿床是一个赋存于泥盆系浅变质岩中的似微细浸染型超大型金矿床。