In the aspect of experiment research: for engineering ceramics such as ZrO2^Si3N4experiments are carried out by a diamond face mill cutter. Cutting force and machined surface roughness are measured, they indicate:(1) Based on the experiments of scratching and ultra-precision face-milling, it is considered that micro-milling depth is the most important influence factor to realize brittle/plastic transition.

實(shí)驗(yàn)研究方面：以ZrO_2国产人成网线在线播放va、Si_3N_4等工程陶瓷為研究對(duì)象69欧美，在加工中心上進(jìn)行了切削力及表面形貌實(shí)測(cè)日本一区二区久久人妻高清，實(shí)驗(yàn)結(jié)果表明：(1)由劃痕實(shí)驗(yàn)和金剛石端銑刀超精密銑削實(shí)驗(yàn)黄色人成影院一级，認(rèn)為切削深度的微量化將是實(shí)現(xiàn)工程陶瓷材料脆塑性轉(zhuǎn)換的重要條件，同時(shí)材料本身的特性也是不可忽視的因素干欧美女人视屏。

It will promote the progress of hole making thechique and accelerate the automatization course of the tool production in our country. In addition, the author analyzes a drill grinding unit on a machining center and present a new grinding model for grinding four-plane facet drill points, which will be a new way of drill grinder design.

此外亚汌人成伊人成综合网222，作者還分析了一臺(tái)加工中心上的鉆頭刃磨裝置，提出了一種兩軸合成四平面鉆尖的刃磨理論国产久精品A片，并對(duì)其應(yīng)用前景進(jìn)行了初步探討，為鉆頭刃磨方法和刃磨機(jī)的研制開辟了一條新的途徑蝌蚪网在线视频。

We should stuik to the advices goren abore ,we will have a healthy life and colourful life.

我們必須堅(jiān)持心上的幾點(diǎn)建議免费一级啪啪啪视频，才會(huì)擁有健康的、豐富多彩的生活A片无卡不码国产在线。

Her paternal surname Merchant is of Sicilian origin and was originally Mercanto before being Anglicised.

孤獨(dú)象一把小刀在线免费可以观看黄色视频，一小塊一小塊在心上劃十字。

And during their whole flight the Elder Tree smelt so sweet and odorous; he remarked the roses and the fresh beeches, but the Elder Tree had a more wondrous fragrance, for its flowers hung on the breast of the little maiden; and there, too, did he often lay his head during the flight.

在他們整個(gè)飛行的過程中欧美精品视频二区免费播放，接骨木樹一直在散發(fā)著甜蜜和芬芳的香氣：他也聞到了玫瑰花和新鮮的山毛櫸亚洲亚洲人综合网站图片，可是接骨木樹的香氣比它們還要美妙，因?yàn)樗幕ǘ渚蛻以谶@小女孩子的心上av.bbixx，而且當(dāng)他們飛行的時(shí)候欧州A片网址，他就常常把頭靠著這些花朵。

Forget. And during their whole flight the Elder Tree smelt so sweet andodorous; he remarked the roses and the fresh beeches, but the Elder Tree had amore wondrous fragrance, for its flowers hung on the breast of the littlemaiden; and there, too, did he often lay his head during the flight.

在他們整個(gè)飛行的過程中男人女人爽到高潮视频真人版，接骨木樹一直在散發(fā)著甜蜜和芬芳的香氣：他也聞到了玫瑰花和新鮮的山毛櫸日本二区三区欧美亚洲国产，可是接骨木樹的香氣比它們還要美妙，因?yàn)樗幕ǘ渚蛻以谶@小女孩子的心上欧美福利片500，而且當(dāng)他們飛行的時(shí)候欧美亚洲福利，他就常常把頭靠著這些花朵。

Don't take it too hard. Let bygones be bygones .

不要放在心上欧洲黄色视频在线观看，過去的事就讓它過去吧欧美精品熟妇人妻在线视频。

Nbsp, puma chaussures ;the morning upon the lonely field whose harvest is over.

我這一刻感到你的眼光正落在我的心上，象那早晨陽(yáng)光中的沉默落在已收

This is, in essence, electric-shock therapy for condors.

從核心上講AAA片免费不卡，這是對(duì)禿鷲進(jìn)行電波治療的方法中文字幕日本αv一区二区。

Crapping on my heart.

就象一只巨大的鴿子，在我的心上排泄糞便