The good effect has been gained on the hypereutectic Al Si alloys treated with some double refining and modifying agents such as P, S, RE, Sr, Na, C, etc.
采用磷、硫、稀土、锶、钠、碳等进行双重细化变质处理过共晶铝硅合金已取得了良好的效果。
Control on harmful elements such as K, Na, f, s in smelting is short of effective measures, which results in BF capacity factor low, BF process not smoothly and serious environment pollution.
对冶炼中有害元素钾、钠、氟、硫的控制还缺乏有效手段，致使出现高炉利用系数偏低、高炉不畅和造成环境的严重污染。
The modifying elements used in hypoeutectic Al Si alloys, besides Na, there are also Sr, Te, Ba, Sb, K, RE, B, S, etc.
亚共晶铝硅合金的变质元素除钠以外，还有锶、碲、钡、锑、钾、稀土、硼、硫等。其中，应用较多的是含钠和锶的变质剂。
The content of 12 Inorganic ions including Na, K, Ca, Mg, Cl, P, Fe, Cu, Zn, Mn, As, Se were quantitatively analysed in extract fluid of Xueyutan, fowl feather and Tibetan Snow Cock′s feather.
对血余炭、鸡毛、藏雪鸡毛的水提取液中钠、钾、钙、镁、氯、磷、铁、铜、锌、锰、砷、硒等12种无机离子含量进行了定量分析。
Effects of na +, heavy metal nickel and vanadium, sulfur and viscosity of residue on activity of catalyst for S-RHT were investigated on a residue hydrotreating pilot unit.
在中型渣油加氢试验装置上考察了钠离子、镍、钒、硫和渣油粘度对s -RHT催化剂活性的影响。
The Garden of Na Tong' s Residence was a famous private garden during late Qing Dynasty to early Republic period.
那家花园是清末民初时北京的一座著名的私家宅园。
Given na 2d grid map of '1's (land) and' 0's (water), count the number of islands.
给定的一个二维网格的地图(1(陆地)和0(水))，计数岛的数量。
Given na 2d grid map of '1's (land) and' 0's (water), count the number of islands.
给定的一个二维网格的地图(1(陆地)和0(水))，计数岛的数量。
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