首次熔煉 的英文怎麼說

中文拼音 [shǒuróngliàn]
首次熔煉 英文
pill heat
  • : Ⅰ名詞1 (頭) head 2 (首領) leader; head; chief 3 (表示方位) aspect 4 (姓氏) a surname Ⅱ動...
  • : Ⅰ名詞1 (次序; 等第) order; sequence 2 [書面語] (出外遠行時停留的處所) stopping place on a jou...
  • : 動詞(熔化) melt; fuse; smelt
  • : 動1. (用加熱等辦法使物質純凈或堅韌) refine; smelt; work 2. (燒) temper with fire 3. (使詞句精美簡潔) polish
  • 首次 : for the first time; first
  • 熔煉 : smelt; smelting; fusion; metallurgy
  1. The results indicate that arc melting is a good method to produce nb - si system intermetallics due to its simpler technics, lower cost and compact products. however, powder metallurgy is found to be not suitable to produce the nb - si system intermetallics due to its coarse and loose products resulting from the poor molding property of nb and si mixed powders. optical floating zone technology, which is used to fabricate nb - si intermetallic composites for the first time, is also found to be a good way to produce nb - si system intermetallics because of its compact products and good property despite of its relatively high cost

    結果表明,電弧方法制備得到的nb - si系金屬間化合物比較緻密,且制備工藝簡單,經濟實用,是一種合適的nb - si系金屬間化合物制備方法;由於nb 、 si元素粉末的成型性很差,用粉末冶金方法(熱壓燒結和冷等靜壓)制備的nb - si系金屬間化合物表面粗糙、緻密度低,且成本較高,不宜用於制備nb - si系金屬間化合物;用光學懸浮單晶生長技術制備的nb - si系金屬間化合物復合材料緻密度很高,盡管成本稍高,但由於性能最佳,也是一種合適的nb - si系金屬間化合物制備方法。
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