时基

It shows that it is possible to increase the start oscillation length by tailoring magnetic field's amplitude and its period without changing the synchronous condition of the fundamental wave;in the meantime, when there are two or more azimuthally asymmetric space harmonics in the high power broad-band helix TWT, the influences of the Pierce's gain parameter, space charge parameter, and loss parameter on the start oscillation length and real starting asynchronous velocity parameter are also analyzed.

研究结果表明：改变聚焦磁场的幅值或周期来增加起振长度是可能的，而且不会改变基波的互作用条件。与此同时，对起振长度、初始非同步速度参量随皮尔斯增益参量、空间电荷参量、损耗参量等的变化，以及在超宽带行波管中当存在两个或多个角向非对称空间谐波时，起振长度、初始非同步速度参量随周期永久聚焦磁场的变化进行了研究。

Prominent ex-officials like Henry Kissinger and James Schlesinger form a kind of government-in-exile, their pronouncements bannered in op-ed pages and broadcast over televising.

Jonathan Levine表现杰出的卸任官员基辛格和史莱辛格等人的发言，常被时论版采用为大标题，并在电视上广为传播，地位形同一个流亡政府。

The results indicated that the homogeneous ER liquid with significant ER effect at room temperature is obtained by mixing the side-chain liquid crystal polysiloxanes containing p-methoxyl phenyl benzolate and silicone oil.

结果表明，用含苯甲酸甲氧基苯酯的侧链液晶聚矽氧烷能组成在室温下表现出较强ER活性的均相ER液，它在外加电场E=2.2kv/mm ，剪切速率为3005s^(-1)时，剪切应力达到1550Pa；增加E和振动频率，均相ER液智能阻尼器的阻尼力均增加，阻尼效果提高。

Next HOMO or HOMO-1 for the radical cations calculated by the ab initio 3-21+G^* method, and the atom-pair interaction energy determined by NMDO calculation, it is shown that when n is equal to or largey than 3 in the bridge chain (CH2)n for bicyclo diamine radical cations, the bridgehead nitrogen atoms form a weak N, N'-three-electron σ-bond through space.

通过比较这些阳离子几何构型，HOMO和NHOMO(即NextHOMO和HOMO-1)，和由MNDO计算确定的原子对作用能，表明当二氮双环游离基阳离子的桥链(CH2)n的n≥3时，桥头氮原子通过空间相互用用形成了一个弱的N，N'-三电子σ键。

Leaves opposite or rarely alternate, subequal in size; stipules lanceolate, 7-10 mm; petiole 1.5-6(-10) cm, densely pubescent; leaf blade dark green or black when dry, oblate to 5-angled or oblate to orbicular-ovate, often ovate in upper stems, 8-12(-18)× 7-14(-22) cm, papery, secondary veins 2 pairs along midvein, abaxial surface densely pubescent along veins and veinlets, adaxial surface roughish, densely strigose, base truncate, subcordate, or broadly cuneate, margin coarsely 8-12-dentate, teeth gradually larger distally, often biserrate apically, apex 3-cusped or lobed, tip serrulate. Glomerules on axillary spikelike flowering branches, male branches often branched, 8-17 cm; female spikes distal, unbranched or branched, 5.5-24 cm.

叶对生或很少互生，大小近等；托叶披针形，7-10毫米；叶柄1.5-6(-10)厘米，密被短柔毛；叶片深绿色或黑色的干燥时，扁球形到具5个角或扁球形的到圆形卵形的，通常在上面茎内卵形的， 8-12(-18)* 7-14(-22)厘米，纸质，次脉2 对沿中脉，背面密被短柔毛的沿脉和细脉，正面微糙，密被糙伏毛，基部截形，近心形，或宽楔形，团伞花序在腋生的穗状的花枝，雄性分枝通常分枝，8-17厘米的；雌性穗状花序上部，不分枝或分枝，-24 厘米。

Result showed that tetrasubstituted calix [4] arenes in lower rim were stronger complex abilities than bisubstituted calix [4] arene with transition metal, heavy metal and rare earth ions. But when introducing the aminephenolicalcohols in the 1, 3-bisubstituted calix [4] arenes, the complex abilities were improved.

结果表明：在Lower rim上四取代的杯[4]芳烃配体比1，3-二取代的杯[4]芳烃配体对过渡金属离子，重金属离子及稀土离子有更好的配位能力，但当1，3-二取代的取代基上引入醇胺链型配体时，对金属离子也有很好的配位能力。

In terms of immunology, uterus is a special reproductive and immune organ. It shows immunological tolerance and immunological rejection respectively at the time of blastocyte implantation and parturition; blastocyte implantation is also concerned with the action of many cytokines and MMPs.

从免疫学角度来讲，母体子宫作为特殊的生殖免疫器官在胚泡着床和分娩时分别表现为免疫耐受和免疫排斥，这两个生理反转过程必然涉及基因的时空差别表达；胚泡植入又涉及大量细胞因子及基质金属蛋白酶的协同参与。

I, B! T5 S, s Yesterday's game was tied at 3 in the sixth -- Hideki Matsui had driven in all three Yankees runs with two sacrifice flies and an RBI single -- when Johnny Damon hit an upper-deck solo home run to right off Jeremy Bonderman (10-6, 4.65 ERA).

L 昨天的比赛，在第6局时双方还是3分的平手局面；洋基的3分都是松井秀喜所打进，包括2支高飞牺牲打，和1支带打点的安打。

Either way, Damon, who launched a go-ahead solo home run off Tigers starter Jeremy Bonderman, said the Yankees are as solid as they've been all season, and now they have these two guys at the other end of the locker room standing under blue name plates reading "Chamberlain" and "Ramirez."

X 即使不算这两位菜鸟在内，戴门--刚刚在面对老虎队先发投手邦得曼时敲出领先分数的阳春炮--说道洋基仍旧跟整季以来一样阵容坚强，而现在又添了两个好手，他们就站在储柜间的另一端蓝色名牌前，名牌上写著「张伯伦」和「拉米瑞兹」。

High-resolution transmission electron microscopy of biosilica in silica cells, bulliform cells and long cells of rice epidermal systems revealed that silica bodies are made up of rods about 2. 0-3. 0 μm in length and 0.2-0.5 μm in width.

借助高分辨电镜研究水稻叶外表皮系统中的SiO〓和细胞壁基质作用时发现在硅细胞、泡状细胞和外表皮长细胞腔中SiO〓是以长 2.0-3.0μm宽0.2-0.5μm的微杆状结构团聚而成。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。