四倍体刺槐自身花粉粒的形状结构之间表现出丰富的变异:体积与形状多样,萌发孔沟的数量及位置不固定,外壁表面的纹饰特征彼此不同等等;
There were remarkable variations in the shape, volume, location and number of bourgeon -hole channels and veins on surface of pollen among pollens of TRP.
结合铣削镁粉的实际生产,对影响铣削镁粉质量的主要因素进行了分析、试验,提出了控制铣削镁粉粒度和形状的有效措施。
The main factors of affecting milling magnesium powders are analyzed and tested based on actual production practices of milling magnesium powder.
结合铣削镁粉的实际生产,对影响铣削镁粉质量的主要因素进行了分析、试验,提出了控制铣削镁粉粒度和形状的有效措施。
The main factors of affecting milling magnesium powders are analyzed and tested based on actual production practices of milling magnesium powder.
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