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The polymethyl methacrylate material with super-hydrophobic surface of the invention is prepared in the following steps: 1 the polymethyl methacrylate material is first put into diamine solution, so that the ester group on the surface of the material has ammonolysis reaction with diamine molecules; 2 and then, the product of the step 1 is put into long chain fatty acid solution to be treated and the solvent is volatilized, so as to obtain the polymethyl methacrylate material with super-hydrophobic surface.

本发明具有超疏水表面的聚甲基丙烯酸甲酯材料,是按照如下步骤进行制备的:1将聚丙烯酸甲酯材料先置于二胺溶液中使聚丙烯酸甲酯材料表面的酯基与二胺分子发生氨解反应;2然后,将其置于长链脂肪酸溶液中进行处理,挥发掉溶剂,得到具有超疏水表面的聚甲基丙烯酸甲酯材料。

First, this paper, in the field of intrinsic geometry, studies the geometric problems on garment design, as well as applies the frame and semi-geodesic coordinates to prove the fundamental theorem of being a developable surface.

文中首先在内在几何学的层次上,研究了服装设计所涉及的几何学问题,应用标架与半测地坐标方法证明了曲面成为可展面的基本定理,研究了可展面的分类及其性质,考虑到服装三维几何造型的需要,证明了组合式可展面各组成片相切连接条件的命题,作为构造可展面的理论依据,证明了单参数平面族的包络面必为可展面的命题,在此基础上发展出服装几何造型的"刮大白"方法以及相关的三种构造可展面的解析方法。3D→2D的变换是三维服装CAD的重要内容之一,其几何学实质是曲面的定长映射,文中总结了定长映射即可展面在平面上展开的基本准则,在这一准则的指导下,结合服装设计与相关领域的要求,讨论了可展面在平面上展开的解析方法与数字方法,上述内容确立了服装设计几何学的基本框架。

Vera's curious talent was brought to the notice of a scientific research institute in the town of Ulyanovsk,near where she lives, in April she was given to a series of tests by special commission of the Ministry of Health of the Russian Federal Republic.

够长的一句话吧,静下心来,and,又见and,括号里面的and是并列句子的,而中括号里面的"strange still"是不是让你想起前面说的那个also,同样这里有个"During these test"来联系前后两句话。同样的不着痕迹的天衣无缝。

Calyx with 5 equal or subequal teeth, when subequal the lower 2 teeth as long as but narrower than upper 3, all inconspicuously veined; false spikes composed of 2-flowered verticillasters; leaves papery; petiole and stems variously hairy white lanate onl

花萼具5等长或近等长齿,近等长但是比上面的3,全部不明显脉狭窄的下部2齿倍于;由2花轮状聚伞花序组成的假的穗状花序;叶纸质;叶柄和茎各种地有毛的白色的具绵状毛的onl

There is a very interesting story about this stone.: the stone bed had the life , when an adult lies on it, the stone can becoe longer; when a child lies on it, the stone can become shorter. It's very mysterious.

关于这张石床还有一个很有趣的故事:很久以前这张石床是有生命的,躺在上面的是成人,它就会变长;躺在上面的是儿童,它就会变短,非常神奇。

The stone bed had the life , when a adult lying on it, the stone could change long; when a child lying on it ,the stone could change shorten, it's very mysterious.

关于这张石床还有一个很有趣的故事:很久以前这张石床是有生命的,躺在上面的是成人,它就会变长;躺在上面的是儿童,它就会变短,非常神奇。

From the above seems to show the failure, the author estimated that the fault is mostly the work of the subsidiary CRT circuit damage occurred because the cathode-ray tube voltage of the focus is very prone to failure similar to the above phenomenon, the phenomenon that gave rise to such failure is due mainly to display work over time, then the CRT focus very near the jack attached to a lot of dust very easily, which encountered wet dust easily lead to the air tubes of focus very significantly decrease the performance of socket contacts, then a cathode-ray tube focus to the natural voltage decline will be affected down, so that we could monitor the performance will be prone to poor focus, image display is a relatively vague.

从上面的显示故障现象来看,笔者估计该故障现象多半是显像管附属的工作电路发生了损坏,因为显像管的聚焦极电压十分容易发生类似上面的故障现象,引起这种故障现象的原因主要是显示器工作时间一长,那么显像管的聚焦极插孔附近很容易附着不少灰尘,这些灰尘遇到潮湿的空气后容易导致显像管的聚焦极插孔接触性能大大下降,那么一来显像管的聚焦极电压自然就会受到影响而下降下来,这样的话显示器也就容易出现聚焦性能不好、图象显示比较模糊的现象了。

The use of differential pressure compensator resolved the difficult problem that partial fan was damaged when fiexible air duct was withdrawn in long blind heading series ventilation , which renewed the mutil partial fan ventilating method.

压差补偿器装置成功地解决了长独头掘进串联通风中柔性风筒被抽出时局部扇风机吸瘪的技术难题,刷新了长独头掘进多台局部扇风机串联通风的常规方法,极大地改善了长独头掘进工作面的生产作业环境。

Every girl has tender one side, even if be again ugly, those who grow is again strong-bodied, she is the tender one side that has a woman.

每个姑娘都是有温柔的一面的,哪怕是再丑,长的再五大三粗,她都是有女性的温柔的一面的。

The ear leather is thick, covered with soft short hair, and when measured, should reach the inner corner of the eye.

比例:身长稍长於高度,(长:高=10:9)如高比长,从胸骨到坐骨,应稍大於肩胛到地面的距离。

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推荐网络例句

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。

However, to get a true quote, you will need to provide detailed personal and financial information.

然而,要让一个真正的引用,你需要提供详细的个人和财务信息。