The method overcomes the shortcoming of grain growing above the initial crystallization temperature in annealing method, successfully preparing nano-crystalline material of very small grain .
该方法避免了传统的退火法在晶化温度以上晶粒长大这一缺点，成功制备出晶粒极细小的纳米材料。
The article discusses and finds the Auster grain growing rules and relations of structure and properties of X70 steel in weld pipe and pipe accessories under the different heating temperature.
研究了一种适用于管道钢管和管件制造的X70级管线钢在不同加热温度下的奥氏体晶粒长大规律和组织-性能间的关系。
The limestones and sandstones without oil were obviously strong in calcite cementation and grain growing. so they had poor storage property and pore-constructures. and even lost storage capacity.
不含油的砂岩和灰岩碳酸盐胶结和颗粒次生加大作用明显加强，物性和孔隙结构差，基本上失去了储集性。
Few of the world's great rivers that run through grain-growing areas now reach the sea all the year round or, if they do, they do so as a trickle.
世界上那些流经粮食生产区的河流很少有终年奔流到海的，即使有，也是涓涓细流。
Few of the world's great rivers that run through grain-growing areas now reach the sea all the year round or, if they do, they do so as a trickle.
世界上那些流经粮食生产区的河流很少有终年奔流到海的，即使有，也是涓涓细流。
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