second normal form 中文意思是什麼
second normal form
解釋
第二範式, 第二正規形式, 二次標準型-
First calculation method : doing horizontal projection drawing on drawing piece, k value is introduced by area equation of projection drawing, k value is obtained by area equation, along outline of projection drawing to add k value, that is, outline shape of blank drawing, principle area - equal and shape similar are used. second calculation method : along outline of drawing piece horizontal projection drawing, to do normal line of penetration line for wantonly point of this point, to obtain high of drawing piece on this point normal line, point and point is to form outline shape of blank
計算方法之一為k值法：作拉深件水平投影圖，在該投影圖面積方程中引入k值，利用面積相等原理解方程，求得k值，沿水平投影外沿加上k值，即為毛坯圖的外廓形狀。計算方法之二為拉深線法：沿拉深件水平投影圖外廓，在任意點作該點切線的法線，在該法線上以該點拉深件的高度為量，在法線上取截點。 -
In the second part, when a four - dimensional smooth system has two distinct pairs of purely imaginvalues at the equilibrium y = 0, the 5 - order normal form is given
第二部分，通過復變量替換和比較系數，在平衡點y = 0處，當特徵根為兩對純虛根時，本文給出了一般的四維非線性微分方程的直到五次的規范形具體形式。 -
All the information giver in this form is true and correct ; i shall abide by the laws of the chinese government and the regulations of the second middle school attached to beijing normal university
上述各項中所提供的情況是真實無誤的；在北京師范大學第二附屬中學學習期間將遵守中國政府的法律和學校的規章制度。 -
The second case is 1 / 2 subharmonic resonance - principal parametric resonance and 1 : 1 internal resonance. the final case is primary resonance for the second mode - principal parametric resonance and 1 : 2 internal resonance. the adjoint operator method and the theory of normal form are used to investigated the normal forms in the four dimensional nonlinear systems with cubic nonlinearities
第一種共振情況是主共振-主參數共振和1 ： 1內共振的情形；第二種共振情況是1 2亞諧共振-主參數共振和1 ： 1內共振的情形；第三種共振情況是第二模態主共振-主參數共振和1 ： 2內共振的情形。 -
Some of these particles are stable and form the normal matter, the others live for fractions of a second and then decay to the stable ones
這些粒子中的一部分是穩定的並且構成了普通物質，其它的只存在一秒鐘的幾分之一，然後衰變為穩定粒子。
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