And the points within the cartesian coordinate system are ,笛卡爾坐標(biāo)系統(tǒng)中的點(diǎn)稱為
Cartesian coordinate system 笛卡兒座標(biāo)系統(tǒng)
In short , vector data take the simplest topological entities - points , lines , and polygons - and anchor them within a 2 - d cartesian coordinate system to describe geographical features 簡(jiǎn)言之,矢量數(shù)據(jù)利用最簡(jiǎn)單的拓?fù)鋵?shí)體點(diǎn)、線和多邊形,并在二維笛卡爾坐標(biāo)系統(tǒng)中固定它們來(lái)描述地理特征。
Simply supported and multilayered magneto - electro - elastic plates : the state vector equation of transversely isotropic magneto - electro - elastic solid is established from its governing equations in a cartesian coordinate system 對(duì)于簡(jiǎn)支壓電壓磁彈性層合板問(wèn)題,從它的基本方程出發(fā),建立了壓電壓磁彈性層合板的狀態(tài)變量方程。
Because geometry of formation of two satellites is very weak , the solution covariance is very big and unstable in order to resolve this problem , the measurement model was transformed from cartesian coordinate system to sphere coordinate system 由于雙星編隊(duì)星座觀測(cè)的幾何結(jié)構(gòu)弱,所以解算參數(shù)的協(xié)方差不穩(wěn)定。為了解決這一問(wèn)題,對(duì)測(cè)量方程進(jìn)行球坐標(biāo)變換。
Based on the correct evaluation of the means and covariance of the measurement error in cartesian coordinate system , the algorithm processes the radar measurements sequentially , and the linearization of measurement equation is no longer neccessary 作者推導(dǎo)了有測(cè)速數(shù)據(jù)時(shí)的去偏轉(zhuǎn)換卡爾曼濾波算法。此算法估計(jì)精度和計(jì)算效率比以前的方法有較大改善,對(duì)測(cè)量方程不做近似處理。
The method is as follows : calculating the length , angles and coordinates of pre - cast hollow slab in cartesian coordinate system , and then adjusting the width of hollow slab beams and length of cantilever boards to make the linear cantilever slabs close to the transition of mute 具體方法是:采用直角坐標(biāo)系計(jì)算預(yù)制空心板斜長(zhǎng)、首尾夾角和起終點(diǎn)坐標(biāo),根據(jù)計(jì)算結(jié)果與路線線形之差,多次調(diào)整空心板梁的梁板寬度和懸臂長(zhǎng)度,使外懸臂折線滿足路線的緩和曲線線形。
In the first part of the paper , the explicit form of difference equation and periodic boundary condition is derived in cartesian coordinate system . secondly , the dispersive characteristic is analyzed in cylinder coordinate system for many high power microwave devices use cylinder sws . and then the method is extended to calculate the band structure of 2 - d photonic crystal , a modified yee ’ s grid is introduced to calculate the dispersive characteristic in the case of triangular lattice , so that both square lattice and triangular lattice cases can be solved in cartesian coordinate system 周期電磁結(jié)構(gòu)的一個(gè)重要應(yīng)用就是用作高功率微波器件中的慢波系統(tǒng),考慮到目前大部分高功率微波器件的慢波系統(tǒng)多采用圓柱周期結(jié)構(gòu),在論文第四章中,在圓柱坐標(biāo)系下,給出了差分方程和周期性邊界條件的具體形式,同時(shí)編寫程序,分析了milosws ,盤荷慢波結(jié)構(gòu)的色散特性。
百科解釋
A Cartesian coordinate system specifies each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances from the point to two fixed perpendicular directed lines, measured in the same unit of length. Each reference line is called a coordinate axis or just axis of the system, and the point where they meet is its origin, usually at ordered pair (0,0).