down twist 中文意思是什麼
down twist
解釋
下-
If this load centroid is behind the elastic axis of the wing structure, then a nose-down twist of the main wing surface results.
如果該載荷重心在機翼結構彈性軸之後，則引起主機翼表面前端向下的扭轉。 -
The chief difficulty alice found at first was in managing her flamingo : she succeeded in getting its body tucked away, comfortably enough, under her arm, with its legs hanging down, but generally, just as she had got its neck nicely straightened out, and was going to give the hedgehog a blow with its head, it would twist itself round and look up in her face, with such a puzzled expression that she could not help bursting out laughing : and when she had got its head down, and was going to begin again, it was very provoking to find that the hedgehog had unrolled itself, and was in the act of crawling away : besides all this, there was generally a ridge or furrow in the way wherever she wanted to send the hedgehog to, and, as the doubled - up soldiers were always getting up and walking off to other parts of the ground, alice soon came to the conclusion that it was a very difficult game indeed
可是，當她好不容易把紅鶴的脖子弄直，準備用它的頭去打那個刺蝟時，紅鶴卻把脖子扭上來，用奇怪的表情看著愛麗絲的臉，惹得愛麗絲大聲笑了。她只得把紅鶴的頭按下去，當她準備再一次打球的時候，惱火地發現刺蝟已經展開了身子爬走了。此外，把刺蝟球打過去的路上總有一些土坎或小溝，躬腰做球門的士兵常常站起來走到球場的其它地方去。 -
In order to input chinese character naturally from keyboard, our next step is presenting a new input method named " stroke simulation ". the main idea of the method is inputting the feature points of a stroke, such as up - point, twist - point and down - point, instead of inputting a stroke directly from keyboard. the trail of the feature points we extracted from a stroke shoud be able to shape the stroke. the most attractive point of this method is that it allows users input strokes continually without an extra key to separate two continuous strokes
為了在鍵盤上實現漢字的自然輸入，論文提出一種「模擬筆劃」的漢字輸入新方法，這種方法特別適用在目前信息產品上廣泛使用的數字小鍵盤上，它不直接在鍵盤上輸入漢字筆劃，而是根據筆劃的形狀特徵和運筆方向輸入漢字筆劃的起點、折點和落點等筆劃特徵點。 -
Pop out type : for eyeglass wearers it can be push down. it is largely replaced by the twist - in - n ' - out type
拉出推入型:戴眼鏡時眼杯可推入目鏡內，不戴眼鏡時可將眼杯拉出，較高級機型使用 -
The pattern on the hologram can project hundreds or thousands of beams that can be moved forward, back, sideways, up or down or can twist the light in a corkscrew trajectory that creates a vortex
雷射全像術的圖案可以投射出成千上百道光束，並且能夠讓光束前後左右上下任意移動，甚至扭曲成螺旋形軌跡，製造出漩渦。 -
A new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source
本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。 -
Abstract : a new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source
文摘:本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。
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