The corneal suface of children with emmetropia has toric shape. There is a fine coincidence between two methods in central corneal power. The corneal surface of children with emmetropia has the feature of irregularity and non-spherical surface.

兒童正視眼角膜表面呈托力克光學(xué)面狼狠亚洲综合狼狼久久；角膜曲率計(jì)與角膜地形圖儀對(duì)于中央?yún)^(qū)角膜曲率測(cè)量有很好的一致性；兒童正視眼角膜表面具有一定的不規(guī)則性(CIM約0.63)和非球面特性(SF約為0.27)欧美日韩视频在线观看一二区。

Test and analysis show that, the distribution patterns of the tangent veloctiy fields in the big cone area and the small cone area, which are comprised of para-free vortex and para-forced vortex, are basically identical without a change of the radius of the boundary surface; with the increase of the angle of the small cone, the para-free vortex area decreases and the para-forced vortex area increases, and the emulsifiability of the fluid drips increases with the increase of velocity gradient; the tangent velocity increases with the increase of inlet flow, and the maximum tangent velocities of both the big cone area and the small cone area are 4.94 times of the inlet flow; and the maximum tangent velocity increases with the increase of the split ratio and with the radius of the boundary surface not changed.

試驗(yàn)分析表明性爱日韩一区，大錐段和小錐段切向速度分布規(guī)律基本相同，均由準(zhǔn)自由渦和準(zhǔn)強(qiáng)制渦構(gòu)成国产精品香蕉AV，分界面半徑rm沒有變化欧美精品黄色免费线视频观看视频；隨著小錐角θ的增加，準(zhǔn)自由渦區(qū)縮小精品久久99国产精品，準(zhǔn)強(qiáng)制渦區(qū)擴(kuò)大性爱网欧美优物性爱，速度梯度增加會(huì)加大液滴的乳化程度；隨入口流量增加久久久久久黃色網站，切向速度增大欧洲熟妇色XXXX欧美在线观看，經(jīng)擬合得出大錐段和小錐段的最大切向速度均為入口流量的4.94倍；分流比加大国产免费播放网站，分界面半徑基本不變亚洲顶级黄片毛片视频，最大切向速度增加。

The measurement of spontaneous surface wetting is one of the few experimental tools available for the study of solid-surface energetics.

對(duì)自發(fā)性表面潤濕的測(cè)量免费A片大片aⅴ免费，確實(shí)是研究固體表面力能學(xué)的少數(shù)幾項(xiàng)試驗(yàn)方法之一黄色一区哈啊肏。

This paper analyzes the surface tension and specific surface free energy of liquid and discusses their microstructure mechanism.

對(duì)液體的表面張力和比表面自由能進(jìn)行了熱力學(xué)分析和比較，探討了液體的表面張力和比表面自由能兩個(gè)概念的各自內(nèi)涵和在分子水平上的產(chǎn)生機(jī)理国产精品三级黄色岛国AⅤ免费看。

Explain that fracture energy and strength decrease from the viewpoint of surface energy and surface tension.

從表面能及表面張力的觀點(diǎn)分析了斷裂能和強(qiáng)度降低的原因精品国产三级AV在线黑。

Similar to surface tension, adsorption is a consequence of surface energy.

類似于表面張力、吸附的表面能量日本小视频网站。

The results show that rutile TiO_2 surface is the lowest energy surface.

計(jì)算結(jié)果表明(110)晶面為最低能量面国产黄色片一区。

And two models of single channel are also developed, one is formed by ruled-surface impeller, and the other is formed by enveloping surface impeller.

然后在專門的網(wǎng)格劃分軟件Gambit中對(duì)兩個(gè)整體風(fēng)機(jī)三維流場(chǎng)模型和兩個(gè)單葉輪通道的流場(chǎng)模型進(jìn)行網(wǎng)格劃分及邊界條件設(shè)置。

Based on the CAD software UG, the models of centrifugal fans with ruled-surface impeller versus with enveloping surface impeller are developed.

首先本文采用CAD軟件UG對(duì)直紋面葉輪離心通風(fēng)機(jī)和包絡(luò)面葉輪離心通風(fēng)機(jī)進(jìn)行了整體風(fēng)機(jī)三維流場(chǎng)建模和單個(gè)葉輪通道的流場(chǎng)建模久久99视频。

The main tops of research and creative points of the dissertation are as follows: The gear surface equations are deduced strictly from the space meshing analysis of planar enveloping hourglass meshing surface.

主要研究工作及創(chuàng)新點(diǎn)如下：論文在對(duì)平面包絡(luò)嚙合成型運(yùn)動(dòng)進(jìn)行空間嚙合分析的基礎(chǔ)上一级A片免费播放在线观看，進(jìn)行了平面包絡(luò)環(huán)面蝸輪副嚙合齒面方程的嚴(yán)格推導(dǎo)，進(jìn)行工具母面坐標(biāo)系的統(tǒng)一化處理，并利用計(jì)算機(jī)技術(shù)免费看国产视频，對(duì)平面包絡(luò)環(huán)面蝸輪副嚙合型面進(jìn)行整體理論實(shí)體造型国产亚洲欧美日韩久久图片，建立了嚙合型面的網(wǎng)格化整體理論模型。