上下

On the one hand,by using the monotone iterative method with upper and lower solutions or anti-order upper and lower solutions,the author obtains the existence of maximum solution and minimum solution.

存Banach空间，一方面运用一般上下解及反序上下解单调迭代方法，并结合非紧性测度的性质，研究了二阶常微分方程周期边值问题最大解与最小解的存在性。

A switch includes a case having an upper surface having a hole provided therein, an operating unit inserted into the hole movably up and down, plural switch contacts activated upon the operating unit moving up and down, and a guide wall protruding downward from an inner edge of the hole.

一种开关装置，包括：具有形成有开口孔的上表面的外壳；可上下移动地插入开口孔内的操作体；随操作体的上下移动而进行动作的多个开关接点；从开口孔向下方伸出的导向壁。外壳的开口孔具有内周端。

Tall is increasing, but the premium increases, prices rise, I can only speculation, the root of their rooms; Although I also have my own studio, but the site was occupied by a state, although land belonged to the state, But once the use value of a developer, I can keep them flying, no; the road is increasingly broad, but it is increasingly narrow bicycles Road, originally dedicated Road, left into a vehicle Road, right into the car park quickly unlimited, leaving a narrow middle also often chaotic occupation of a motor vehicle; overpass is a Linked one, but is increasingly difficult to cross the road, the driver did not pay attention to chef even Renhanghengdao for Luanchuanmalu pedestrian certainly is "Zhuangliaobaizhuang"; Park green is growing, but life has become increasingly narrow space, the original park was re-take a walk in the center of boulevards Green, the elegant lawns covered, We are left with the space, only a winding footpath; Hospitals are increasingly modernized, but even such ordinary influenza also looks down upon a small disease; Opera, dance halls, a stadium, we ordinary people have no connection with today took even have to pay a cinema; The nine-year compulsory education system, it is based on how much money school choice, children only from the starting line began "lose" to others; The summer swimming the river, now being built next to the vertical Andi, scores of kilometres from the absence of a ladder, even risky climb, but managed to have almost as general; can also have a working dinner, but feel ready to layoffs, and unemployment pressure and threats, Today's dinner is enough, but who knows "where tomorrow's breakfast"; he spent more than 5,000 yuan, the two teams ranked before placement of a great phone Unexpectedly placement just shortly after they announced telephone "price", but the price is only an initial installation, and calls are rapidly rising with the economy; have spent hundreds of dollars to watch a cable, but others say it increases the price, do not even get a hit

高楼大厦是越来越多，但地价飞涨，房价腾贵，我只能望楼兴叹，蜗居于自己的斗室；虽然也有自己的蜗居，但所占用的地皮却属于国家，虽说地皮属于国家，但一旦被某个开发商看中了，我的蜗居随时都可能灰飞烟灭、荡然无存；马路是越来越宽了，但自行车道却越来越窄了，原来的专用道，左边变成了机动车道，右边成了无限长方形的停车场，剩下中间窄窄的一条还时常被乱停的机动车占用着；立交桥是一个连着一个，但过马路却越来越困难了，司机师傅连人行横道都不放在眼里，对于乱穿马路的行人当然就是"撞了白撞"；公园绿地是越来越多了，但生活空间却越来越狭小了，原来散步的街心公园被重新绿化、铺上那娇贵的草坪之后，给我们留下的空间，就只剩下一条弯曲的小径了；医院是越来越现代化了，但连感冒之类的普通小病也瞧不起了；歌剧院、歌舞厅、体育馆等，历来就与我们普通百姓无缘，如今竟连电影院也去不起了；九年制的义务教育，如今已是凭出钱多少选择学校，孩子只能从起跑线上就开始"输"给人家了；原来夏天游泳的那条河，如今被砌成垂直上下的岸堤，几十公里没有一个上下阶梯，即使冒险跳下去，但爬上来却已如登天一般；也有一份可以吃饭的工作，但随时都能感受到下岗、失业。。。。。。

"A window in a vertically slid ing frame is called a sash window: a single-hung sash has only one half that moves; in a double-hung sash, both parts slid e."

在窗框中上下滑动的窗，称为上下推拉窗，仅有一扇窗可滑动的称为单悬窗，两扇都能滑动的称为双悬窗。

In littler reduced area difference it transformed symmetric shape of a sphere enclosing above and below two smaller spheres into asymmetric shape.

我们通过研究发现，上下对称性确实被打破，但只在约化面积差较大时转化到胃形泡；在约化面积差较小时，则转化到上下不对称的双内陷形状。

According to the case of billet heating in a regenerative type heating furnace, the temperature distributing of billet about upper surface, undersurface and center surface in length and width is studied by computational fluid dynamicsin this article, and the questions of billet such as different temperature of upper surface and undersurface, the higher temperature of foursquare margin and the lower temperature of tapping orifice are put forward.

中文摘要：借助CFD仿真手段，模拟蓄热式加热炉内钢坯加热的实际状况，研究了钢坯长度、宽度方向上下表面和中心温度的温度分布，提出钢坯存在上下温差、四角边缘温度高和靠近出钢口钢坯温度低等问题。

The crankshaft is located below the cylinders on an in-line engine, at the base of the V on a V-type engine and between the cylinder banks on a flat engine.

这个机轴是被放置在同轴的气缸下，根据V类型的发动机和平坦发动机两旁的气缸，活塞上下动来转变机轴就像我们的腿在骑自行车时上下踩踏板一样。

Compared the vertical parallax of models reconstructed by using the elements of exterior orientation obtained by GPS-supported bundle block adjustment with that determined by position and orientation system, the vertical parallaxes of models are analyzed.

通过比较利用GPS辅助光束法区域网平差获得的像片外方位元素和POS提供的像片外方位元素重建立体模型所产生的模型上下视差，分析了POS系统误差对模型上下视差的影响。

"A window in a vertically sliding frame is called a sash window: a single- hung sash has only one half that moves; in a double- hung sash, both parts slide."

在窗框中上下滑动的窗，称为上下推拉窗，仅有一扇窗可滑动的称为单悬窗，两扇都能滑动的称为双悬窗。

The high speed multiplex first-in first-out storage structure includes at least two memory unit arrays, one integrated decoder circuit between the two memory unit arrays, one write-in control circuit over the decoder circuit, one read-out control circuit below the decoder circuit, two data buffers on the two memory unit arrays separately, two multiplex circuits and two output circuits below the two memory unit arrays separately, and one write-1 clock buffer and one read-out clock buffer over and below the decoder circuit separtely.

一种高速多路先进先出存储器结构，包括一至少两存储单元阵列、一位于至少两存储单元阵列中间的整体解码电路、分别位于整体解码电路的上下的一写入控制电路及一读出控制电路、分别位于至少两存储单元阵列上的两数据输入缓冲器以及依序位于两存储单元阵列下的两多工电路及两输出电路，在整体解码电路的上下分别设置一写入时钟缓冲器及一读出时钟缓冲器。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。