hda 中文意思是什麼

hda 解釋
磁頭磁盤組合件
  1. It revealed that hexagonal structure was easily synthesized in the neutral medium, and lamellar structure was inclined to prepare under basic condition, and from the cooperative charge density matching mechanism and function of manganese iron and template molecular, the alkalescence influence on the structure was explained, and appropriate neutral hexadecylamine ( hda ) availed to synthesis of mesophase with more ordered degree for the mediation of packing parameter

    通過水熱合成方法對錳氧有序相的合成進行初步研究，探討合成工藝對有序結構的影響：在中性的條件下，易合成六方有序結構產物；在堿性條件下，更易合成層狀結構產物。並從電荷匹配的原則及錳離子與模板劑間鍵合作用解釋了堿量的多少對合成產物結構的影響。
  2. It was revealed that the hexagonal order was destroyed and the phase transition from hexagonal to amorphous structure with the increment of manganese ion, and with the appropriate neutral hexadecylamine ( hda ) with cetyltrimethylammonium bromide ( ctab ) as mixed template, mn - mcm - 41 was synthesized with well uniformly pore size and hexagonal mesostructure for the additional function of n - metal covalent bond, and the ordered structure was mediated by the influence on the packing parameter

    表明隨著mn ~ （ 2 + ）引入量的增加，導致介孔長程有序結構的破壞，最終引起由六方相向無定型相的轉變。適量中性表面活性劑十六胺的引入以形成混合模板劑，通過在原有靜電作用基礎上增加n -金屬鍵作用，合成結構較為完整的錳摻雜mcm - 41材料。
  3. The hda company is a special manufacture of original keys, hda has a wide product range with over 10, 000 product of various catalogues, the annual production quantity is approximately 200 million pieces

    公司注重科技進步，並引進了世界最先進的鑰匙坯生產工藝和設備，可以保證行業內技術競爭優勢。
  4. There were more than 20 new aircraft registered in hong kong in 2001, with 14 and five of them acquired by cpa and hda respectively

    二零零一年，在香港登記的新飛機超過20架，其中14架由國泰航空公司購置，另外五架則由港龍航空公司添置。
  5. In october 2001, cad mandated the locked cockpit door policy for cpa and hong kong dragon airlines limited ( hda ). passenger access into the cockpit during flight has since been prohibited

    二零零一年十月，民航處規定國泰航空公司和港龍航空公司必須執行關鎖駕駛艙的政策，從此以後，在飛機飛行期間，任何乘客都不得進入駕駛艙。
  6. This year, cpa will bring in two new a340 - 600 aircraft, while hda plans to add five aircraft to its fleet - one a320, one a321, two a330s and one b747 freighter. the introduction of new aircraft and services reflects hong kong airlines confidence in the economy

    在本年內，國泰航空公司會引入兩架新的a340 600型飛機，港龍航空公司則計劃為其機隊增添五架飛機：一架a320型、一架a321型和兩架a330型空中巴士，以及一架b747型貨機。
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