Automatic generation of contour in 2d scalar fields and its programming 二維標(biāo)量場等值線自動生成方法與程序?qū)崿F(xiàn)
To solve the equation instead of iterative algorithm with an indispensable initial value , the theory of extracting isocurve in two - dimension scalar field is used 利用該算法可以求出任意浮態(tài)下的船體與水線面的交線。
The simplest physical model for an appropriate dark energy component is a single slowly - rolling scalar field , sometimes referred to as quintessence 解釋黑暗能量最簡單的物理模型,是一個單一而緩慢滾動的純量場,有時稱為真空場。
Cosmologists already ascribe cosmic inflation , and perhaps the dark energy ( distinct from dark matter ) that is now causing cosmic acceleration , to scalar fields 關(guān)于宇宙暴脹,以及引發(fā)宇宙加速膨脹的暗能量(有別于暗物質(zhì)) ,宇宙學(xué)者已經(jīng)將之歸因于純量場。
The distribution of physical quantity of 3 - d scalar field of casting surface can be observed visually using the technique to display the 3 - d scalar field 采用該技術(shù)來顯示鑄件各部位在凝固過程中各時刻的三維標(biāo)量場,可以直觀地觀察鑄件表面三維標(biāo)量場物理量的分布情況。
If a scalar field changes slowly , it resembles a constant , both in its fixed magnitude and in its lack of directionality ; relativity theory predicts it will produce a gravitational repulsion 如果純量場變化緩慢,它就會有固定的大小,而且沒有方向性,就像一個常數(shù)一樣;相對論預(yù)測,這種情況會產(chǎn)生重力排斥效應(yīng)。
There are other models of dark energy besides those based on scalar fields . one scenario is " solid " dark matter , typically based on networks of tangled cosmic strings or domain walls 當(dāng)然亦有些黑暗能量理論模型并未引入純量場的觀念,其中一個假設(shè)是實黑暗物質(zhì)的存在,這些物質(zhì)可以是糾結(jié)的宇宙弦網(wǎng)絡(luò)或區(qū)域墻。
Abstract : a display technique of surface rendering was developed in order to display the numerical simulation results of 3 - d scalar field physical quantity of the whole casting during solidification process visually and precisely 文摘:為了更直觀和準(zhǔn)確地顯示整個鑄件各部位在凝固過程中各時刻的三維標(biāo)量場物理量的數(shù)值模擬結(jié)果,設(shè)計了一種稱之為表面繪制的顯示技術(shù)。
With the aid of computer algebra system maple , the nonlinear algebra equations corresponding to the nonlinear coupled scalar field equations can be successfully solved this way , and eventually many exact solutions to it can be obtained 用這種辦法在計算機(jī)代數(shù)系統(tǒng)maple上成功地求解了非線性耦合標(biāo)量場方程組所對應(yīng)的非線性代數(shù)方程組,最終獲得了耦合標(biāo)量場方程組的眾多精確解。
By studying the late - time evolution of massive scalar fields in the charged black hole - global monopole background , we find that the asymptotic decay of these fields is dominated by an oscillatory inverse power - law tail , and the decay is faster in the case 我們通過對在單極子荷電黑洞背景中有質(zhì)量標(biāo)量場后期演化的研究,發(fā)現(xiàn)振蕩反冪函數(shù)的衰減方式支配了有質(zhì)量標(biāo)量場的后期衰減。
In mathematics and physics, a scalar field associates a scalar value to every point in a space. The scalar may either be a mathematical number, or a physical quantity.