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By means of using a disc cutter with a concave end instead of traditional ball-ended or flat-ended ones,and adjusting the cutter axis to move relatively to the component being machined according to some special rules,the envelop formed by the trace of the tool-nose in each pass and the required surface have the same derivatives up to the second order in the plane normal to the feeding direction.

采用二阶密切曲率法，即采用中凹的盘形铣刀取代传统的球头或鼓形铣刀，在每一行程中让刀具轴线相对于工件按特定的规律摆动，使得在垂直于进给方向的法截面中，由刀尖轨迹形成的包络面与理论曲面的法截线具有相同的1阶？

The fabrication of frits by sintering the packing material in the two end of the packed-capillary is substituted by drawing out fine tapers.

有鉴於挡板在填充式毛细管电层析质谱造成的影响，实验的第二部份是在毛细管两端以拉尖缩口的方式取代挡板的烧制，可减少毛细管在制作及操作上的困难。

Firstly, we research the Vlasov antenna with reflector mainly. A new method to calculate the radiation of the antenna is founded with Vectorial Theory of Diffraction, and the corresponding program is made. The reflective characters of Vlasov antenna are studied with Moment Methods, and the results show that the total reflected energy is less than 0.25%. The radiation patterns of the antenna are analyzed, and the formulas to estimate the wave beam parameters and to design the antenna are provided. The feasibility of radiating high-order modes by Vlasov antenna is also discussed and verified. The hermetization of the Vlasov antenna is researched and the results show that with such kinds of hermetization the antenna can work under gigawatt level. The design of the mode converter from TEM to TMoi is studied, which is useful when the TEM coaxial mode is radiated by Vlasov antenna. At last, the flared-end Vlasov antenna is also discussed.

在Vlasov天线方面：用矢量绕射理论建立了天线辐射场的计算模型并编写了计算程序，该程序计算结果在主瓣上与实验测量吻合良好，近旁瓣也基本一致；利用矩量法计算了天线的反射系数，表明该天线有较小的反射，总的能量反射小于0.25％；详细分析了天线的辐射特性，给出了天线辐射波束相关参数的估算公式和天线设计公式；进一步研究和论证了Vlasov天线辐射高阶轴对称模的可行性；对天线的密封方式和功率容量进行了讨论，结果表明在不需很大密封罩的情况下可以获得GW级的功率容量；为了用Vlasov天线辐射同轴TEM模，研究了TEM-TM_(01)模式转换器的设计，得到了一些基本规律；最后，介绍和分析了带有锥形喇叭的Vlasov天线。

The attachment of the ejector rod to the ejector plate (4) is either by means of a projecting integral threaded member (as for the conventional design shown in Figure 3.18) or by fitting a suitable diameter grub screw (5) into the front end of the ejector rod to produce the same result.

顶棒安装在顶料板（4）上，安装方法既可以用整体突出螺纹（如同图 3.18的传统设计）也可以用一个适当直径的螺柱（5）旋入顶棒的前端以获得相同的效果。

Strictly speaking, not the target but hitting the target is the end in view; one takes aim by means of the target, but also by the sight on the gun.

严格地说，目标并不是靶子，而是击中靶子；放枪的人通过靶子来瞄准，但是也要看着枪支。

On my way up north up on the ventura i pulled back the hood and i was talking to you and i knew then it would be a life long thing but i didn't know that we we could break a silver lining and i'm so sad like a good book i can't put this day back a sorta fairytale with you a sorta fairytale with you a sorta fairytale with you things you said that day up on the 101 the girl had come undone i tried to downplay it with a bet about us you said that- you'd take it as long as i could i could not erase it and i ride along side and i rode along side you then and i rode along side till you lost me there in the open road and i rode along side till the honey spread itself so thin for me to break your bread for me to take your word i had to steal it and i'm so sad like a good book i can't put this day back a sorta fairytale with you a sorta fairytale with you i could pick back up whenever i feel down new mexico way something about the open road i knew that he was looking for some indian blood and find a little in you find a little in me we may be on this road but we're just imposters in this country you know so we go along and we said we'd fake it feel better with oliver stone till i almost smacked him seemed right that night and i don't know what takes hold out there in the desert cold these guys think they must try and just get over on us and i was ridin' by ridin' along side for a while till you lost me and i was ridin' by ridin' along till you lost me till you lost me in the rear view you lost me i said way up north i took my day all in all was a pretty nice day and i put the hood right back where you could taste heaven perfectly feel out the summer breeze didn't know when we'd be back and i, i don't didn't think we'd end up like like this

在途中提高北方在 ventura 上提高我向后地拉头巾而且我正在和你说话而且我知道然后它会是生活长的事物但是我没有知道那我们我们可以休息一个一线希望而且我很这么忧愁同类一本善行书我不能放这日子背面一近似美丽宛如在神仙故事中的与你一近似美丽宛如在神仙故事中的与你一近似美丽宛如在神仙故事中的与你你说那个日子的事物在 101 上提高女孩有来未完成的我试验过的不予重视它藉由一个打赌有关我们你说那-你将会拿它只要我可以我无法消除它而且我乘坐向前边而且我向前骑边你然后而且我向前骑边直到你失去的我在那里在开着的道路中而且我向前骑边直到蜂蜜传布它本身如此瘦的因为我对休息你的面包因为我拿你所说的话我必须偷它而且我很这么忧愁同类一本善行书我不能放这日子背面一近似美丽宛如在神仙故事中的与你一近似美丽宛如在神仙故事中的与你我可以精选向后地向上的每当我感觉？？落新的 mexico 方法关于开着的道路某事我知道他是找寻一些 indian 血和稍微在你里面稍微找发现在我里面我们可能是在这一条道路上除了我们只是 imposters 在这国家中你知道因此我们向前去和我们说我们有假货它以脚踏铁槌石头感觉好很多直到我几乎有味道他似乎是权利哪一夜晚和我不知道什么控制向那边在那沙漠寒冷这些人认为他们一定尝试而且仅仅在我们身上克服而且我是 ridin'被 ridin'向前边一阵子直到你失去的我而且我是 ridin'被 ridin'向前直到你失去的我直到你失去的我在那后面视野你失去的我我说方法向上的北方我花了我的日子极其重要的是一相当好的日子和我放头巾正确地背面哪里你可以味道天堂完全地感觉夏天微风没有知道当我们将会回来而且我我做不没有想我们有结束在同类上面同类这

The sixth, there were no significantly differences between colchicine groupsand vinblastine groups on the metaphases, in the experiment of prepare mouse4-cell embryo stage single blastomere chromosome specimen by using optimumparameters; and there were significantly differences between colchicine groupsand vinblastine groups on the metaphases (P＜0.05), in the experiment of preparemouse 8-cell embryo stage single blastomere chromosome specimen by usingoptimum parameters.The end, the preparation quality of mouse 4-and 8-cell embryo stage singleblastomere specimen were 2.5, 2.7, 2.4, 1.9, respectively.

低渗液选用0.45％氯化钠时，低渗效果优于选用0.5％柠檬酸钠和0.35％氯化钾的。6、在利用最佳参数制备小鼠4-细胞期胚胎单卵裂球染色体标本时，经统计分析，两种阻断剂的作用效果差异不显著；而在制备小鼠8-细胞期胚胎单卵裂球染色体时阻断剂选用长春花碱的效果优于秋水仙素的(P＜0.05)。7、秋水仙素组和长春花碱组小鼠4、8-细胞胚胎单卵裂球染色体标本制备质量分别为：2.5、2.7、2.4、1.9。

These microlites and richer amorphous region will benefit the polycondensation reaction of PET, the diffusion of volatile by-products, and the approach of the end-groups of PET molecular chains by forming more routeways, which may result in the higher rate of SSP.

作者认为这些更多数量的微晶体有利于固相缩聚过程中副产物小分子的扩散去除及PET大分子链端基的扩散接近，从而在宏观上表现为PET／MMT的固相缩聚速率大大提高。

By the end of August the breath of winter returns, and by mid-September the tundra is white again.

到8月底，冬天的气息又返回来了，到了9月中旬这冻土带又是冬天了。

By the end of August the breath of winter returns, and by mid-September the tundra is white again.

到8月底，冬天的气息重返冻土带，而到9月中旬，冻土带又是白茫茫一片。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。