common trimming 中文意思是什麼
common trimming
解釋
一般平艙-
Seen now, in broad day - light, she looked tall, fair, and shapely ; brown eyes with a benignant light in their irids, and a fine pencilling of long lashes round, relieved the whiteness of her large front ; on each of her temples her hair, of a very dark brown, was clustered in round curls, according to the fashion of those times, when neither smooth bands nor long ringlets were in vogue ; her dress, also in the mode of the day, was of purple cloth, relieved by a sort of spanish trimming of black velvet ; a gold watch watches were not so common then as now shone at her girdle
這會兒大白天，她看上去高挑個子，皮膚白皙，身材勻稱，棕色的眸子透出慈祥的目光細長似畫的睫毛，襯托出了她又白又大的前額，兩鬢的頭發呈暗棕色，按一流行式洋束成圓圓的卷發，當時光滑的發辮和長長的卷發，並沒有成為時尚。她的服裝，也很時髦，紫顏色布料，用一種黑絲絨西班牙飾邊加以烘托。一隻金錶當時手錶不像如今這么普通在她腰帶上閃光。 -
So as to deal with this problem, local b - spline surface designing method with complicated trimmed boundary constraints is advanced. for two neighboring surfaces, we first trim a belt along the common boundary and then bridge a b - spline surface between these two trimmed surfaces with a smooth blending. with respect to the comer area comprised of several adjoining surfaces, a rectangular region covering the comer area is obtained by trimming operations at first, and later a local b - spline for filling the rectangular region is completed through interpolation or approximation
在兩張相鄰的曲面之間，先在其公共邊界處裁剪出一個帶狀區域，然後再採用曲面搭接的方式實現曲面之間的光滑過渡；而在鄰接曲面的公共角點處，先在該角點附近區域裁剪出一個矩形拓撲域，然後運用插值或逼近的方法，設計出一張既滿足於該區域的邊界條件同時又插值或逼近內部采樣點的b樣條曲面。 -
So how to determine the trimming shape and dimension for exact flanging is very important for reducing the period of producing trimming mould and saving the cost. simultaneously it is a difficult problem in whole mould manufacture. several common methods of calculating the cutting contour were discussed in this thesis
拉延後如何確定修邊線的尺寸和形狀，使翻邊后突緣輪廓正好達到零件所需翻邊高度，對于縮短模具製造周期，減少生產成本都具有重要意義，同時也是整個模具行業亟待解決的一大難題。
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