crown piece 中文意思是什麼

crown piece 解釋
（舊制）舊五先令硬幣。

  • crown : n 1 （勝利的）花冠；榮譽；〈美俚〉錦標。2 王冠，冕；王位；君權；〈the Crown〉 國王，君主。3 王冠...
  • piece : n 1 片；斷片，碎片；一部，部分，部件。2 〈作量詞〉一片，一幅，一匹，一塊，一件，一項，一番，一段...
  1. It was a round about the size of a crown piece

    這是一枚銀幣大小的圓紙片。
  2. The statue in a niche in the rear part of chengguang hall is 1. 5 meters high. it was carved out of a whole piece of jade. the crown and garment are of gold foil and inlaid with red and green crystals

    供于承光殿後廈怫內，用整塊白玉雕琢而成，高1 . 5米，頂冠和袈裟飾金箔，並嵌有紅懇晶石。
  3. I ask your excellencies pardon, but this is quite a french demand ; for the next week you will not find a single tailor who would consent to sew six buttons on a waistcoat if you paid him a crown a piece for each button.

    請兩位大人原諒，這個要求法國氣太重了，因為在這一個星期以內，即使你們要找一個裁縫在一件背心上釘六粒鈕扣，每釘一粒紐扣給他一個艾居，他也不會乾的。 」
  4. Abstract : in order to solve the double parameters enveloped in the geartooth flank generating, the complicated double parameter envelope is simplified to the generating process between work - piece and imaginary crown generating gear by means of mathematical transformation. the equation of the imaginary crown generating surface and the partial derivatives are deduced, so the differential geometric parameters of the generating surface can be obtained. by analyzing the generating motion between the imaginary crown generating gear and the work - piece, all the first to third order geometric parameters of the generated tooth flank at any given point can be calculated

    文摘:為了解決直接求解展成法加工中存在的復雜雙參數包絡問題時的困難，提出通過數學變換，將此包絡問題轉化為假想平面產形輪與工件之間的展成問題來進行研究.推導了假想產形面的方程和各階偏導矢，於是可獲得產形面的微分幾何參數.通過分析假想平面產形輪與工件之間的展成運動，即可得到被展成齒面上任意指定點的全部一至三階微分幾何參數
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