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The spectrum of cut-off frequencies is discussed in electromagnetical symplectic system. The wave number k is given and the cut-off frequencies are computed.

在电磁波导辛体系内讨论波导的通过谱，给出一定的波数并建立相应的变分原理，得出本征值方程并计算了波导的截止频率。

Producers must decide whether to cut the plants and ensile directly into a silo,(direct-cut silage) or allow the forage to dry in the field for a few hours to a day. The moisture

生产者们必须决定是将牧草收割后直接青贮到地窖中还是让牧草先在田间干燥几小时到一天后再进行青贮。

Power-source programmed switch can cut off in between and cut in both the left and right which can be used as extinctive switch.

Z 电源程序开关，中间断开，左右均接近，可作消防开关。

Based on an analysis of distribution pattern of hydrocyclone"s axial velocity, by changing the inlet flow rate Qi and split ratio Fand making an investigation in the effect of Qi and F on axial velocity field, the factors causing the forming of short-cut circuit and circulating flow are found. It is considered that the short-cut circuit and circulating flow are produced by the structure of the hydrocyclone, and can"t be eliminated completely, though they interfere the flow field inside a hydrocyclone and affect the separation accuracy. Test results show that, by increasing Qi and F and controlling them in a certain range, the separation efficiency of the hydrocyclone can be improved.

在研究旋流器轴向速度分布规律的基础上，分析了短路流与循环流的形成原因，试验研究了改变操作参数，即改变入口流量Qi与分流比F对轴向速度场的影响认为短路流与循环流是由旋流器结构决定的，很难完全消除，它们干扰了旋流腔和大锥段的流场，在一定程度上也影响了分离精度试验结果表明，加大入口流量Qi与分流比F，并将其控制在一定范围内，便可提高分离效率这项研究对水力旋流器分离机理的认识与实际应用均有重要意义

The three conserved histidine residues with a conserved glutamate residue fits the active site of the homology model of oxalate oxidase.2. Construction of plant binary expression vector of germin geneThe germin gene fragment cut with BamH I from intermediated vector pDG28 was inserted into binary vector pBI121 cut with the same enzyme to formrecombinants which was selected by plaque PCR .

Germin基因植物表达载体的构建将中间载体上的germin基因片段用Bam H I酶切下来，插入用同样酶切的双元表达载体pBI121上，以菌落PCR筛选重组子。

Main products: 1, tropical flowers: Strelitzia reginae, ginger lotus 2, winter flowers: Ying Huang fresh-cut flowers, seedlings 3, Flower Bulb: Zantedeschia, Gladiolus, Lilium, Tuberose, Hippeastrum, etc.(of the ball , fresh-cut flowers) 4, high-grade indoor and outdoor potted: money tree, desert rose flowers, such as Technology Development Co., Ltd.ê°wholeheartedly with the domestic and international peers and friends, the friendly cooperation and common development, and fully utilizing modern scientific and technological means, by industrialization, large-scale , commercialization and internationalization of standards, quality and efficient implementation of flowers, a famous Chinese flowers.

主要产品：1、热带花卉：鹤望兰、姜荷花2、冬季花卉：黄莺鲜切花、种苗3、球根花卉：彩色马蹄莲、唐菖蒲、铁炮百合、晚香玉、朱顶红等4、室内外高档盆花：金钱树、沙漠玫瑰等臧健花卉科技开发有限公司竭诚与国内外同行和朋友友好合作、共同发展，充分利用现代科学技术手段，按产业化、规模化、商品化、国际化的标准，实现花卉优质高效，创中国花卉名牌。

A child hewas like art and paper cutting, paper-cuts have participated increative arts. In 2004, Liu Zeng took 8 months to create a lengthof 24 meters, 0.62 meters wide and the "Dream of Red Mansions,"paper-cut scroll, and get the first paper-cut Prize-winner inLiaoning Province.

他自幼喜欢美术和剪纸，曾多次参与美术剪纸创作。2004年，刘光增历时8个月创作出长24米、宽0.62米的《红楼梦》剪纸长卷，并获得辽宁省首届剪纸大赛金奖。

These changes include both positive changes from nonforest to forest and negative changes from forest to nonforest. The top ten changes by area were as follows: plantation to cut area, forest toopen forest, forestto cut area,non forest to forest, barren land to forest,plantation to plowland,forest tobarren land,plantation to barren land,nonforest landto forest and open forest to forest.

森林资源变化依次是经济林变成采伐迹地、林分转变为疏林地、林分转变为采伐迹地、非林地向林地转变、宜林地转变为林分、经济林转变为耕地、林分转变为宜林地、经济林转变为宜林地、未成林地转变为林分、疏林地转变为林分。

For thousands of years, such as with a cut, how the osmanthus trees will not be cut.

几千年来，就这样随砍随合，这棵桂树永远也不能被砍光。

Dawson decoration the girl bothers, Travis and Baker has simultaneously fallen in love with her, but this time, local local tyrant Wang Hai cut had also known the mystical buried treasure's news, the sea cut considered oneself as place's of for this barbarian uncultivated land ruler, he will certainly not look on perhaps the buried treasure fell into hands of the two outcomer, Baker is in vain superhuman also has had no way all these to be troublesome steadily 11 levels

道森饰的姑娘搅局，特拉维斯和贝克同时爱上了她，而此时，当地的土霸王海切也得知了神秘宝藏的消息，海切自视为这块蛮荒之地的统治者，他当然不会坐视宝藏白白落入两个外来者之手，贝克就是长了三头六臂恐怕也没法把所有这些麻烦一一摆平

For we always stayed in our house when no course,so Gulu had little chance to go out for a race,and she showed more and more bad temper with yelling all the night.and she would hide in one side sliently without our intimity.

因为我们除了上课基本上不出门，所以很少出去溜它，它的脾气变得越来越暴躁，整夜的叫。看到我们也不亲近了，总是躲在一边。

THAT'S GOD who consoles you in his arms and gives you peace.

那是上帝用祂的膀臂安慰你，赐你平安。