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The typical brain stem four associations sickness performance very rare,many accompany the side main center surface tongue paralysis for the hemiparalysis,the overlapping paralysis is rare,the four limbs paralysis is next.

典型脑干四联症表现很少见，多为偏瘫伴同侧中枢性面舌瘫，交叉瘫少见，四肢瘫次之。

In the first part, the opinions and ideas from some main figures concerning the North-western regions in modern history; In the second part, the process of three vital stages(Yang-Wu Movement, the "New Deal" in the last period of Qing Dynasty, Anti-Japanese War) are studied, and the characteristics of each stage are generalized falling into four categories, such as: military、feudal、comprador and nation-monopoly etc; In the third part, four reasons of the low efficiency of the industrial and mineral exploration are explored, they are the dominant role natural economy, the low level of productive forces, the science and technology, lack of capital accumulation and investment, lack of systematic policies and support from the government, In a word, as Mao Tsetung said:"It"s impossible to get rich, develop industry, strengthen national defence in semi-colonel and semi-feudal China.

全文共分四部分，第一部分论述了近代一些主要的阶级关注西北的言论和思想；第二部分对西北近代工矿业开发的三个最重要的阶段，即洋务运动时期、清末"新政"时期、抗日战争时期的开发过程做了梳理，并对每一个阶段的特点做了初步地概括，大致可以归纳为军事性、封建性、买办性以及国家垄断性等；第三部分对西北近代工矿业开发成效不高的原因做了论述，主要有四点：第一，小农业与家庭手工业紧密结合的自然经济占统治地位；第二，生产力水平低下，科学技术落后；第三，缺乏资金的积累和投入；第四，缺乏政府系统的政策支持和保障。

Methods The normal children in 500 and 206 cases with secundum ASD were selected from outpatients by randomized. Both groups divided 10 sections according to their area of body surface, and measured diameter of interval atrial septum in the subcostal four chamber view and subxiphoid four chamber view by echocardiography.

选择正常儿童 5 0 0例和单纯ASD患儿 2 0 6例按照体表面积分成 10组，用超声心动图常规取心尖四腔心和剑下四腔心切面测量每一例儿童房间隔直径。

By reactions of p-hydroxybenzoic acid with the chlorides of adipic acid, suberic acid, sebacic acid and 1,10-decanedicarboxylic acid respectively four new diacids, and then their dich-lorides, were obtained. The four diacids were found to be thermotropic.

将己二酸、辛二酸、癸二酸、1，10-十二烷基羧酸经酰氯化后，分别与对羟基苯甲酸合成，得到了四种二元羧酸以及与其相应的四种二元酰氯，并发现前者具有热致液晶性。

It was found that activated sludge can degrade effectively four of them except chlorinated paraffin and alkyl sulfonyl chloride, so it is suggested that these four kinds of fatliquors are suitable for leather processing concerning their environmental.

研究发现，硫酸化牛蹄油、硫酸化蓖麻油、硫酸化鱼油和卵磷脂易于生化处理，能够被活性污泥高效降解；然而活性污泥不能降解氯化石蜡和烷基磺酰氯，特别是烷基磺酰氯还会抑制污泥的生物降解活性。

There are Many Types of Four Seasons Sunrooms - A story of how one woman found the perfect four seasons sunroom for her Victorian home.

有许多种四季sunrooms -故事如何找到一个女人为她的完美四季sunroom维多利亚回家。

Four points floating air suspension The cab of highway vehicle adopts domestic original four points floating air suspension shock absorbing device to realize the optimal shock absorbing under many kinds of road conditions; it is stable and comfortable and can reduce the fatigue of the driver efficiently securing the driving safety.

四点悬浮式空气悬架公路用车驾驶室采用国内独创的四点悬浮式空气悬架减震装置，可实现多种路况下的最佳减震效果，稳定而舒适，能有效降低驾驶员的疲劳，保证行车安全。

In this paper, the surface tension in four types of surfactant solutions, such as SAS, 1631, CAB-35 and JFCS in different concentrations were tested by using automatic surface tensiometer and the critical micelle concentration of each surfactant solution was determined which could be used as the mixing concentration of four types of surfactant solutions and the experiments of effective simulation of dust-settling by spraying them in fully mechanized caving face were carried out.

应用全自动表面张力仪对SAS、1631、CAB-35和JFCS 4种表面活性剂溶液不同浓度下的表面张力进行了测试，确定其临界胶束浓度，并以此浓度作为4种表面活性剂溶液的配比浓度；对4种表面活性剂溶液进行了综放工作面喷雾降尘有效性模拟实验，实验结果表明，所选取用4种表面活性剂溶液降尘效率均比清水有较大提高，对呼尘的降尘效率皆在90%以上；表面张力较小是选定综放工作表面活性剂溶液的重要标准，但非唯一标准。

Four letters (in English notation 'a','g','f' and 'c') indicated a series of four succeeding tones with the range of a tetrachord .

四个字母符号（英文'一'，'g的，'f'和'c'的）表示的一系列成功的四个声调范围与四度音阶。

What these three edifices manifest is "concrete-form imagery": The most eye-catching feature of the Grand Louvre expansion project is I.M. Pei's glass pyramid, employing modern-day materials to manifest anew the dream of the ancient Egyptians, to transcend mundane existence and to enter into a heavenlyparadise beyond the influence of events in time and space and not subject to natural deterioration; the four-sided La Defense Arch symbolizes a window "opened to the world and welcoming the future"; and the French National Library's four L-shaped glass-walled towers concretely represent opened books standingon end, giving the viewer the immediate impression of "book."

这三件建筑作品呈现的都是「具支配之世外桃源的古老梦想；拉德芳斯凯旋门象徵「一扇开向世界、迎向未来」像的意象」：大罗浮宫计画中最受注目的，是贝聿铭的玻璃帷幕金字塔，使用现代材料重现埃及民族渴望超脱其生存的现世，进入一个不受时间与自然毁坏法则的窗子；国家图书馆则以四座L型玻璃帷幕高塔，具体表现出四本打开立放的书，直接传递「书」的立即印象。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐