some homological properties of positive graded algebras

homological properties of modules characterized by matrices

用矩阵刻画模的同调性质

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the ocean quahog-a type of deep-sea clam-was dredged alive from the bottom of the north atlantic near iceland in 2006 by researchers.

2006年，研究者们从冰岛附近的北大西洋海底将这只海蛤一种生活在深海中的蛤蜊活生生的捕捞上岸。

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now, after examining the ocean quahog more closely, using more refined methods, the researchers have found the animal was actually 100 years older than they first thought.

现在经过更精密仪器的更细致研究，科学家们发现这只海洋圆蛤实际上比他们预先设想的还要老100岁。

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study on preparation of ultra - fine and high purity aluminium silicate

超细高纯硅酸铝生产新工艺研究

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pit etching research about heat treatment and ce content on cube texture in high purity aluminium foils

蚀坑法研究微量Ce及退火对高纯铝箔立方织构的影响

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the effect of trace beryllium on recrystallization textures of high purity aluminium foils for high voltage electrolytic capacitors

微量铍对高压阳极电容铝箔再结晶织构形成的影响

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evolution of microstructures and textures of high purity aluminium during rolling and annealing

高纯铝在轧制及退火过程中微观组织与织构的演变

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influence of lubricants on recrystallized cubic texture of high-purity aluminium foils during cold rolling

冷轧润滑剂对高纯铝箔再结晶立方织构的影响

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microstructural changes in high purity aluminium subjected to equal channel angular extrusion

高纯铝等通道转角挤压引起的微观组织变化

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patent of high purity aluminium refining equipment producing the 5n-6n high purity aluminium is the cutting edge technology in the industry.

高纯铝提纯设备专利提纯出纯度为5N5-6N的高纯铝是高纯铝业金字塔的尖端工艺。

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new soil classification chart and undrained shear strength (cu) based on cptu are developed in this paper.

提出了新的土分类图及不排水抗剪强度的估算公式；

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besides, the undrained shear strength was increased slightly due to the negative pore pressure.

不排水条件下由于负孔隙水压力的存在，土样的表观强度略有增大。

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it was found that the undrained shear behavior of loose sands was considerably dependent on the orientation of the principal stress.

研究表明，主应力方向对在不排水条件下饱和松砂的单调剪切特性具有显著影响。

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maintaining to be constant, the maximum bending moment of the pile increases linearly with increase of the undrained shear strength .

在不变的情况下，桩身弯矩随着增加呈线性增长。

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the normal growth of dendrobium has a close relationship with symbiotic fungi that play a key role in dendrobium seed budding, endophytic fungi formation and nutriment supplies.

石斛是我国名贵的中药材，其正常的生长发育与共生真菌密切相关，共生真菌可在石斛种子萌发、菌根的形成及营养物质的供应中起到关键作用。

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the ideal of the fraternal order in 18th century and its influence to the music composition

18世纪共济会的理想及其在音乐创作中的体现

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around 1985 i joined a fraternal order which sent me regular monthly lessons in mysticism and 'universal law'.

大约在1985年的时候，我参加了一个兄弟会，它会每月定期给我寄送密义和宇宙法则的课程。

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after tracing the cause of the error the paper brings out the proper relationship between the equivalent airspeed and the calibrated airspeed and gives the corresponding chart of corrected calculation.

在讨论了问题的原因后，本文导出了当量空速与校正空速之间的关系；并给出了相应的修正计算图表。

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a discussion on the corrective calculation of equivalent airspeed

关于当量空速修正计算的讨论

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high purity oxygen production system by psa based on plc

基于PLC的变压吸附制高纯氧系统

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