有两个根的

The invention concerns a vibration damping device comprising an element converting mechanical energy into electrical power mounted on a base designed to be fixed on a structure to be damped. Said converting element comprises an electrodynamic motor including a coil (20) mechanically connected to the base (1) and a magnetic circuit suspended by at least a spring (22), and the coil (20) is coupled with an electric charge having a resistive component and it includes a control device for varying the value of said resistive component based on at least two values.

本发明涉及一减震装置，所述装置包括一种把机械能转换为电能的能量转换装置，所述装置可安装在待减震结构的底座上，其特征在于，所述转换装置包括一电动机，所述电动机有一线圈(20)及一磁路，所述线圈采用机械方式连接底座(1)，所述磁路通过至少一根弹簧(22)悬置着，线圈(20)耦合着一具有一电阻元件的电载荷，并具有一控制装置，用于按至少两个值来改变所述电阻元件的阻值。

Firstly, there could be an error in the apices formed by each two sets of helices of opposite hand, commonly referred to as apex wander or run-out.

第一，有可能是一个错误的形成两个。每根尖套一圈的侧手，一般简称先端游荡或者精疲力尽。

This dissertation gives appraisable index system about excess of financial sustainment and real estate bubble, at the same time we particularly analyze two econometric methods: the test of unit root and cointegration, the test of speculation.

为此本文构建了金融支持过度评价指标体系和房地产泡沫评价指标体系，同时在对泡沫检验理论进行回顾与评价的基础上，选出两个有代表性的泡沫检验模型作为检验房地产泡沫的工具：单位根与协整检验和投机度检验。

The aerobic bacteria andtotal microorganism were the highest in autumn and the lowest in winter;Theactinomycetes was the highest in spring and the lowest in winter;The rhizospherefungi was the highest in autumn and the lowest in winter, the non-rhizosphere fungi was the highest in spring and the lowest in winter.The average microorganism"s R/Sof four seasons in Eucalyptus grandis plantation is 1.40,the aerobic bacteria"s averageR/S of four seasons is 1.40,the actinomyeetes"s average R/S of four seasons is 1.40,thefungi"s average R/S of four seasons is 1.41.The uprightness distribution rule ofrhizosphere and non-rhizosphere soil microorganism in Eucalyptus grandis plantationwere the same,the trend is surface layer(0-20cm)＞middle layer(20-40cm)＞underlayer(40-60cm).Compared with the amount of microorganism in 2004, the amount ofmicroorganism in 2006 had a definite drop.

好气性细菌及微生物总数量秋季最高、冬季最低；放线菌数量春季最高、冬季最低；真菌数量根系土壤秋季最高、冬季最低，根外土壤春季最高、冬季最低；巨桉人工林三大类微生物四季的平均R／S值1.40，好气性细菌四个季度平均R／S值1.40，放线菌四个季度平均R／S值1.40，真菌四个季度平均R／S值1.41；巨桉人工林两样地根系与根外土壤微生物垂直分布规律一致，土壤微生物三大类及微生物总数量的垂直变化总的趋势是表层(0～20cm)＞中层(20～40cm)＞下层(40～60cm)；相比较2004年土壤微生物数量，2006年三大类数量及微生物总数均有一定程度的下降。

Either of two quadric surfaces generated by rotating a hyperbola about either of its main axes and having a finite center with certain plane sections that are hyperbolas and others that are ellipses or circles.

双曲面两个二次曲面的任何一个，通过使一个双曲线绕其任何一根中轴旋转而成，而且旋转时有一个有一定双曲线平面切面的中心，而其他切面是椭圆或圆周

Either of two quadric surfaces generated by rotating a hyperbola about either of its main ax es and having a finite center with certain plane sections that are hyperbolas and others that are ellipses or circles.

双曲面两个二次曲面的任何一个，通过使一个双曲线绕其任何一根中轴旋转而成，而且旋转时有一个有一定双曲线平面切面的中心，而其他切面是椭圆或圆周

This utility model disclosed a multifunctional medical bed, which includes bedstead, bed board and the ups and downs institutions, bedstead has a four box beams, two fixed and two longeron longeron Events, bed board are four longitudinal medial convex-concave shape of the edge was the cross-cutting board, threeéups and downs, including the board and connected the three screw or hydraulic cylinder, the multi-functional medical bed may also include raised his sick body.

本实用新型公开了一种多功能医用床，它包括床架、床板和起落机构，床架四框内有一根横梁、两根固定纵梁和两根活动纵梁，床板是四块纵向内侧边缘呈凹凸形状相互交叉的板子，起落机构包括三块樘板和与其连接的三个丝杠或者液压油缸，该多功能医用床还可以包括病人抬起机构。

Came to the lava cliffs fall zone, take the left side of the road directly in a group of birds where there are two columns below, the jump down (not dead, I am sleepy in this place as long as two hours), skip left after the first go, be reminded to observe, and now moving about in the magma, but can only be waist high magma, there is a need to see more of the terrain, do not waste HP, now jumped down, back to the left跳崖Department, went to is located in Magma, Fire Dragon Shou equipment can move around a half height of magma, first up, get a weapon, and then down, has been in the end, to continue filing filed walk inside the wind can be magic, the way to the red chest is a green precious stones, to increase the wind magic attack, and get back only to return to bandage things MM has emerged, but said a few left, and then returning to fight BOSS, the BOSS to attack his tail, the beginning of the head is of no use, finished BOSS, while red chest after using wind magic jump can be achieved

掉下悬崖来到了熔岩地带，直接走左边的路，在一群鸟的地方，下面有两根柱子处，往下跳(不会死的，我在这个地方困了2个小时之久)，跳下后先往左走，得到火龙守，现在可以在岩浆中走动了，但是只能是下半身高的岩浆，所以要多看地形，不要白白浪费HP，现在可以往下跳了，回到跳崖处往左，来到岩浆地处，装备火龙守，可在半身高岩浆里走动，先往上，拿到武器一把，再往下，一直到底，存档处存档继续往里走可得到风魔法，途中的红宝箱是绿宝石，增加风魔法攻击的，等回来时才能拿，返回事绷带MM又出现了，不过说了几句就走了，然后返回途中打BOSS，此BOSS要攻击他的尾巴，开始时打头是没有用的，打完BOSS，途中红宝箱利用跳后的风魔法可以取得

In a normal spine, the spinal dura mater is a loose sheath that is anchored in the ertebral canal by the nere roots and by its attachment to the periosteum in two places: one at the foramen magnum and the dorsal surfaces of C2 and C3 and the other at the coccyx .

在正常脊柱，硬脊膜是松散的鞘性结松，其靠神经根和两个骨膜驸着部位固定在椎管内，一处在枕大孔和C2及C3，另一处在尾骨，其余部分只是悬吊和衬附于椎管内，其间有硬膜外脂肪、静脉丛和疏松的结缔组织。

Above and around these two delicate heads, all made of happiness and steeped in light, the gigantic fore-carriage, black with rust, almost terrible, all entangled in curves and wild angles, rose in a vault, like the entrance of a cavern.

几步以外，有一个面目并不可爱但此刻却很令人感动的大娘，那就是她们的母亲；她正蹲在那客店门口，用一根长绳拉荡着那两个孩子，眼睛紧紧盯着她们，唯恐发生意外。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。