上叉

The flow state in bifurcations is very complex as one of important problems of hydromechanics. It covers many technical and biomedical applications.

流体在叉管中的流态是流体力学中一个非常复杂的问题，该问题的研究涉及很多技术上和生物医学上的应用。

Grantaire added to the eccentric accentuation of words and ideas, a peculiarity of gesture; he rested his left fist on his knee with dignity, his arm forming a right angle, and, with cravat untied, seated astride a stool, his full glass in his right hand, he hurled solemn words at the big maid-servant Matelote:-- Let the doors of the palace be thrown open!

格朗泰尔指手画脚，清晰有力地发挥他的奇想和怪论，他左手捏起拳头，神气十足地抵在膝头上，胳膊肘作曲尺形，解开了领结，两腿叉开骑在一个圆凳上，右手举着个酌满酒的玻璃杯，对着那粗壮的侍女马特洛特，发出这样庄严的指示：快把宫门通通打开！

We also watched a sloth take about a half hour to move from one branch to the other.

我们还看到一只树獭花了半个小时，从一树叉上爬到另一枝上。

In the fork, like a mast-headed seaman, there stood a man in a green tabard, spying far and wide.

就在这叉形的树枝上，站着一个穿绿色粗布短外套的男人，象船桅上守望的水手那样，向四周侦察着。

He hangs his hat smartly on a peg of Bloom's antlered head Show me in.

灵巧地把帽子挂在布卢姆头上长的多叉鹿角尖儿上。

Using stereomicroscope, we observed the fracture line direction and location as well as the angle between the fracture line and the attrite plane. The data was compiled into statistics and analyzed. The results revealed that most of the vertical root fractures occurred in teeth with severe attrite crown and flat root. Numerous bucco-lingual oriented fractures occurred in the mesial root of molars, and we found three non-endodontically treated cases with mesio-distal oriented fractures in the palatal roots.

结果发现，两组的垂直牙根断裂均好发於牙冠严重磨耗（77.4-88.2%）且扁平的牙根（61.8-75.8%）上，以大臼齿的近心牙根发生率最高（64-85.7%），多为颊舌侧走向（91.2-91.9%），且於未根管治疗组别亦发现三例腭侧根断裂，走向为较宽的近远心方向，显示牙根断裂会沿著牙根较宽的方向发生；同时，未经根管治疗而产生垂直牙根断裂的牙齿具有根叉位置较低的现象（61.8%），牙根於比例上有较短小的特徵。

The strings of couroucous were kept for the next day, butthey plucked a couple of grouse, which were soon spitted on a stick, androasting before a blazing fire.

他们把大串的锦鸡留到第二天，将两只松鸡拔了毛，叉在棍子上，在旺盛的火焰上烤了起来。

It's wonderful that the goose jumped down form the dish and wavily walked toward to the girl on the floor with the knife and fox on back.

更妙的是这只鹅从盘子里跳下来，背上插着刀和叉，摇摇摆摆地在地板上走着，一直向这个穷苦的小女孩走来。

It was a more wonderful thing that the goose jumped down from the plate backed the knife and fork walked on the floor wavily to the poor little girl .

更妙的是这只鹅从盘子里跳下来，背上插着刀和叉，摇摇摆摆地在地板上走着，一直向这个穷苦的小女孩走来。

For preparing for the researches of text digital watermarking and advantaging other researchers" development when using the Chinese mathematical expression theory, this paper designs and realizes a development platform of Chinese mathematical expression. It has been proved by experiments that the platform"s function, execution speed and stability can satisfy the requirements of conversion and operation of enormous data.This research found out that the structure information of Chinese have plenty redundant information that can be used by the Chinese mathematical expression for the digital watermarking, the data embedded can possess better robustness. Based on this finding, this paper designs a kind of text digital watermarking method of embedding watermarking by using Chinese structure, and realizes the method by using the Chinese mathematical expression platform.Considering the watermarking embedding algorithms importance to the robustness of the text digital watermarking, this paper makes fully use of the advantage of the Chinese mathematical expression theory to design a kind of layered text method, which has being realized by using the Chinese mathematical expression platform. The layered text method can handle the text as a solid structure, and the embedding data havepreferable robustness.Finally, based on the researches of the text digital watermarking method and the text layered method, this paper integrates the method of making use of the Chinese structure embedding watermarking with the robust algorithm based on text layered, and realizes a brand-new text digital watermarking method. Proved by lots of experiments, this brand-new method has good robustness and better invisibility.

为了为研究工作做准备和方便其他使用汉字数学表达式理论体系的人进行开发，本文基于汉字数学表达式理论设计实现了一个汉字数学表达式平台，实现了Unicode汉字集中的汉字、汉字数学表达式、汉字的Unicode码之间的相互转化、依据汉字数学表达式提取汉字的结构信息、由汉字数学表达式在非中文平台上不依赖字库显示汉字的图像等功能，使用复合文档技术和流压缩技术进行数据的存储，使用对汉字数学表达式进行二叉树拆分来处理汉字数学表达式中包含的信息，使用自定义哈希函数来提高运行速度，实验证明，该平台功能、速度和稳定性完全能满足大量数据的转化和运算要求；通过研究表明汉字的结构信息中存在大量可使用汉字数学表达式理论加以利用的水印加载空间，加载在该空间的数据可以具有较好的鲁棒性，基于此，本文设计了一种利用汉字结构加载水印的文本数字水印方法，并使用汉字数学表达式平台将其实现；由于水印嵌入算法对于文本数字水印的鲁棒性至关重要，本文充分利用汉字数学表达式理论的优点，设计了一种文本分层的方法，并使用汉字数学表达式平台将其实现，使文本成为一个立体的空间，使嵌入在其中的数据具有更好的鲁棒性；最后在基于汉字数学表达式的文本数字水印嵌入方法的研究和基于汉字数学表达式的文本分层方法的研究的基础上，结合利用汉字结构嵌入水印的方法和基于文本分层的抗攻击文本水印嵌入算法实现了一种全新的文本数字水印方法，经实验证明，该方法有良好的鲁棒性和较好的隐蔽性。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷