The value of hypereutectic Al Si alloys is their fine primary silicon particles.
而使高硅铝合金充分发挥实用价值的关键是细化初晶硅。
At higher overheating temperature, the shape of primary silicon becomes the star-shape and tree-shape.
随着熔体过热温度的升高， 凝固组织中初生硅形状由多边形向星形及树枝状转变。
The primary silicon particles precipitating from the solidification of Al-Si hypereutectic alloy was regarded as inclusions.
将铝硅过共晶合金凝固过程中析出的初生硅颗粒视为夹杂物颗粒。
The amount of segregated primary silicon grains increases with increasing magnetic gradient, whereas the grain size decreases.
当磁场强度不变，随着磁场梯度的增大，初晶硅的偏聚量增加，晶粒尺寸变小。
With the increase of modifying temperature, the modification of rare earth Pr enhances on primary silicon, fades on eutectic silicon.
随着变质温度的升高，稀土对初晶硅的变质作用加强，而对共晶硅的变质作用减弱。
This product can optimize and fine the shape and distribution of primary crystal and eutectic silicon. The modification is long acting and remelting modification efficacy can pass down.
本品能优化与细化初晶硅及共晶硅形态及分布，变质具有长效性，重熔变质功效可遗传。
Within specified limits, the primary dendrite spacing will be extended and the macrostructure defect will be obviously decreased in continuous cast billet with the increase of silicon content.
指出在一定限度内，随硅含量增加，铸坯的一次晶间距加宽，各类低倍组织缺陷大大减少。
Plasma enhanced chemical vapor deposition (PECVD) technique is the primary method which is used to prepare hydrogenated silicon film.
等离子体化学气相沉积技术制备氢化硅薄膜工艺条件成熟稳定而成为薄膜制备的首选方法。
In order to meet the requisition of preparing PS on large size silicon chip, primary study was performed on preparing PS by galvanic element method.
为了适应在大尺寸硅片上制备多孔硅的要求，对原电池法制备多孔硅进行了初步研究。
Primary Ingredients: Mint cooling factors, herbage essence, collagen, hyaloplasm acid, Lubrajel, elastic silicon oil, aloe gel juice and etc...
主要成份：薄荷清爽因子、草本精华、胶原蛋白、透明质酸、芦芭胶、弹性硅油、芦荟凝胶汁等。
Primary Ingredients: Mint cooling factors, herbage essence, collagen, hyaloplasm acid, Lubrajel, elastic silicon oil, aloe gel juice and etc...
主要成份：薄荷清爽因子、草本精华、胶原蛋白、透明质酸、芦芭胶、弹性硅油、芦荟凝胶汁等。
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