模型 1.(仿制實(shí)物) model; pattern 模型所代表的實(shí)物 antitype; 模型展品scale model; 飛機(jī)模型 model of an airplane; 復(fù)制模型 replica; 原尺寸模型 mock-up; 機(jī)器的模型 pattern of a machine; 做一個(gè)汽船模型 model a steamboat; 他用粘土做模型。 he models in clay.2.(制砂型的工具) mould; pattern3.(模子) model set; mould pattern; layout; type; representation; cast; version; matrix; mock-up; shape
This paper established the cutting model of blade which is the important part of earth auger , and analysed the relationship between the parameters of geometrical structure and the force of cutting with matlab 本文對(duì)挖坑機(jī)的重要工作零件刀片建立了其純切削模型,并運(yùn)用matlab分析了刀片的結(jié)構(gòu)幾何參數(shù)對(duì)切削力的影響關(guān)系。
An ophthalmic excimer laser system used to correct wavefront aberration is presented . the conception and zernike representation of wavefront aberration of human eyes recommended by osa are introduced . the connection of wavefront aberration and ablation profile is analyzed and a model for calculating ablation profile to correct wavefront aberration is presented . because the ablation depth on the boundary is nonzero and irregular , we present a model for calculating ablation profile in a transition zone 深入研究了準(zhǔn)分子激光像差矯正系統(tǒng),采用美國(guó)光學(xué)大會(huì)推薦的像差的定義、像差的zernike多項(xiàng)式表示方法,定量分析zernike多項(xiàng)式表示的像差與角膜切削量的關(guān)系,采用主觀式人眼像差儀測(cè)量像差,得出了像差矯正的角膜切削模型,并提出了一種采用過渡函數(shù)進(jìn)行邊界切削的方法,用于可調(diào)的過渡區(qū)切削量的計(jì)算,為人眼單色像差的矯正提供了理論基礎(chǔ)。
The frozen coal destruction is the tension stress destroys , and establish the frozen coal cutting model in this foundation , obtains the cutting force , feeding force , tooth spacing according to the smallest energy principle . bring forward a rotary drilling mothod to unload the frozen coal , the broken ability is strong , without frozen depth limits , then obtains this machine working parameters , has combined this method with a grab and determined the plane of vehicle - carried rotary drilling movable coal - unloader 凍煤破壞是拉應(yīng)力破壞,在此基礎(chǔ)上建立了凍煤的切削模型,根據(jù)最小能量原理得到截割力,進(jìn)給力和截齒間距的計(jì)算公式,分析得到截割力與切削厚度成正比,隨著前角的增大而減小;截齒最優(yōu)截距與截齒尺寸有關(guān)且與切屑厚度成正比;進(jìn)給力隨著截齒前角增大而增大的規(guī)律。