primary particle size 中文意思是什麼

primary particle size 解釋
一次粒徑
  • primary : adj 1 第一的，最初的，初級的；初等的；基本的；基層的。2 主要的，為首的，第一位的。3 原始的，根本...
  • particle : n 1 顆粒，微粒；微量，極少量。2 【物、數】粒子，質點。3 【語法】虛詞，不變詞〈冠詞、副詞、介詞、...
  • size : n 1 大小，尺寸規模身材。2 （鞋帽等的）尺碼，號；（紙張的）開。3 巨大，大量；相當大的分量。4 〈口...
  1. Aluminium oxide used for the production of primary aluminium - particle size analysis for the range 45 ? m to 150 ? m - method using electroformed sieves

    主要用於鋁生產的氧化鋁. 45 m至150 m范圍內的粒度分析.電刻篩分法
  2. 1 lanthanide hydrides ( m = la, nd, sm, dy and yb ) can be prepared easily by the direct hydrogenation of lanthanide metals catalyzed by ticl4 in tetrahydrofunan ( thf ) under normal pressure. the rate of hydrogenation decreased with increasing atomic number of lanthanides. transmission electron micrographs showed that the resulted lanthanide hydrides were in the form of nanoparticles with an average primary particle size around 20 - 40 nm

    本論文首次提出一種在溫和條件下催化合成納米尺寸的鑭系金屬氫化物的方法，介紹在常溫常壓下，鑭、釹、釤、鏑、鐿五種鑭系金屬在四氫呋喃（ thf ）溶劑中，催化劑作用下與氫氣直接化合形成相應的納米尺寸的鑭系金屬氫化物。
  3. Few studies have been made in the gas - solid interfacial heat transfer. in this thesis, the influence of primary air, particle size, and particle circulation rate on gas - solid interfacial heat transfer in cfb were investigated, and the influence of secondary air and particle distribution were investigated for the first time by using the naphthalene sublimation technique

    本文在自建的循環流化床實驗臺上，運用萘升華熱、質類比技術考察了一次風、顆粒循環量、顆粒粒徑，顆粒平均空隙率等因素對床內氣粒兩相間傳熱、傳質特性的影響情況，並首次考察了二次風的作用和粒徑分佈的影響。
  4. Transmission electron micrographs showed that the resulted lanthanide were in the form of nanoparticles with an average primary particle size around 20 - 40 nm

    Tem測試結果表明真空條件下（ 13 - 40pa ） ，熱分解制得的活性金屬粉末的顆粒大小為20 - 40nm ，分散度好且純度高。
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