top riser 中文意思是什麼

top riser 解釋
頂冒口
  • top : n （opp bottom foot）1 頂，頂部，頂端。2 頭，頭頂；尖端；樹梢，樹頂；（事物的）上層部分。3 最高位...
  • riser : n. 起來的人；反抗者，起義者；【航空】起飛裝置；【機械工程】（鑄件）冒口；上升裝置；【建築】（梯級的）起步板，登板。 an early [a late] riser 起得早[晚]的人。
  1. In order to producte qualified inlet manifold casting, top gating system with lip riser and shell core made of precoated sand is used

    為了獲得合格的進氣歧管鑄件，採用壓邊頂鑄澆注系統和覆膜砂殼芯製作工藝。
  2. Simulating results reveal that hydrodynamics of catalysts in riser reactor is very complex due to the effect of injection and catalysts backmix dramatically near the nozzle, reaction products unevenly distributie along the riser height, there exists apparently temperature gap between gas - phase and solid - phase near the nozzle and the temperture of two phase is nearly equal at middle - top part

    模擬結果表明，由於原料油射流的影響，提升管反應器內催化劑顆粒的流動特徵非常復雜，在噴嘴附近的催化劑顆粒存在明顯的滑落返混；裂化產物濃度沿提升管存在非均勻分佈；氣粒兩相間溫差在噴嘴附近顯著，在中上部氣粒兩相溫度幾乎相等。
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