两尖的

Today, Blackfriars Priory School and Yangjian High School of Jiangsu Province will establish sister school relationship . Our two schools will communicate and cooperate with each other in many aspects. According to the agreement, we will develop an all round partnership of cooperation on education programs and exchanges, such as school visits and exchange , international students exchange, teachers exchange and training, education and culture research and exchange.

今天，江苏省羊尖高级中学与黑修士中学缔结为友好学校，我们将与贵校进行多方面的合作与交流，根据"协议"，我们将"建立两校之间的互访机制"、"开展两校学生的相互访问及交流"、"建立两校教师的互访交流机制，开展相关的培训项目"、"共同合作开展教育相关研究课题及文化交流活动"等方面的合作与交流。

Objective:Analyzes two kind of roots to be sufficient cataplasm to the young permanent teeth root point induction forming curative effect.

目的：分析两种根充糊剂对年轻恒牙的根尖诱导成形疗效。

Solid carbide tungsten fishtail drill is suitable for pcb flexible foil clad laminate,used for target machine drilling,the features of pcb fishtail drill are thin and flexible plate,it's structure and cutting methods are different with normal pcb drill bits.its two main cutting edge is concave and formed 100degree angle,in order to distinguish with PCB drill,named fishtail drill.fishtail drill cuts beginning of circular drill.concave along the main cutting edge to cut,chip is just two much fine filament.cuttingis falling off naturally,in order to be processed without burrformation by pcb surface.

整体硬质合金鱼尾钻适合印制电路板行业加工挠性覆箔板，为打靶机钻孔用。鱼尾钻所加工的印制电路板特性是薄板、带柔性、这样就决定了它的结构和切削方式与一般PCB钻不一样，它的两主切削刃是内凹的，两主切削刃形成100度的夹角，为了与PCB钻区别，就叫它鱼尾名。鱼尾钻切削时从我圆处钻尖开始，沿着内凹的主切削刃切削，切屑只是两条极细丝状切削，整个切削自然剥落，从而被加工印制板表面平整无毛刺。

When propagating light\|ray passes through two fixed points in the gradient index mediums and a cuspidal variable\|point （at this point the trace equation of propagating light\|ray is non\|differentiable） at the borderline of two different GRIN mediums, the mathematical relationship, which the trace equation of propagating light\|ray and borderline equation of two different GRIN mediums should satisfy, is derived by the Fermat's principle and calculus of variation.

当光线通过梯度折射率介质中两个固定点和两个GRIN介质界线上的可动尖点（光线轨迹方程的不可微点）时，由费马原理和变分法运算推得传输光线的轨迹方程与两种不同GRIN介质的界线方程应满足的微分关系式。

The leafstalk, chief vein, bud, the cane top on side branch, bast and xylem of type B had type A and C tow components, belonging to chimeric tissues. The leaf pulp and thin leaf vein had no components of type C, belonging to pure tissues of type A. Type B plant had two kinds of color roots, the rufous roots belonged to type A tissue, the yellow roots belonged to type C tissue through the SSR identification.

深州杨B型的叶柄、叶主脉、芽、侧枝茎尖、韧皮部、木质部同时检测到深州杨A、C型两种成分存在，属于嵌合组织，B型叶肉及细叶脉中检测不到深州杨C型成分，属于深州杨A型纯合组织；深州杨B型植株的地下部分含有红褐色和土黄色两种根，经检测，红褐色根是属于深州杨A型的纯合组织，土黄色根是属于深州杨C型的纯合组织。

I lowered the tip of mine into the water, tentatively, pensively dislodging the fly, which darted two feet away, poised, darted two feet back, and came to rest again a little farther up the rod.

沉思的我小心地把杆尖放进水里，被赶飞的蜻蜓飞到两尺以外的地方停了下来，再飞远了两尺，然后又飞回杆上离我近了一点的地方。

To this end the original 'Blue Fox' radar is replaced by Ferranti 'Blue Vixen' coherent pulse-Doppler track-while-scan radar to improve acquisition and look-down capabilities, and other improvements are a MIL 1553B digital databus (making it possible to carry Sea Eagle anti-ship and ALARM anti-radar missiles) and the installation of the Marconi Sky Guardian 200 RWR, the JTIDS for secure voice and data links, two additional underwing hardpoints, wing tip stations for two AIM-9 Sidewinder short-range AAMs, wing improvements, a revised cockpit with HOTAS controls, larger drop tanks, provision for 25 mm Aden 25 cannon in place of the elderly 30 mm weapons, and possibly a Plessey missile-approach warning system.

为实现这一目的，原有的"蓝狐"雷达被新型的"蓝雌狐"连续波脉冲多普勒雷达替换，该雷达具有搜索的同时锁定目标的能力，可下视下射。其他改进包括加装军用1553B数据链，这使得MK2可以使用"海鹰"反舰导弹和ALARM反雷达导弹。另外加装了马可尼"天空哨兵200"通信系统，JTIDS保密语音及数据链路。增加了两个翼下外挂点，翼尖挂架可携带两枚AIM-9"响尾蛇"近距空空导弹。细节的改进还包括：机翼设计有所改进；改进的座舱设计；更大的副油箱；采用阿登25mm机关炮代替了以往的30mm机炮；可能加装了导弹告警系统。

And the development and formation of the sieve tube elements of the different cultivars were influenced by the different levels of B: the sieve tube elements of the two cultivars were not formed at the level of 0.001mg/L; At the level of 0.01mg/L, the sieve tube elements of the high efficiency (Qingyou 10) cultivar could be formed, but the structure of the sieve tube elements was not complete, and the abruption and differenciation of the sieve tube elements of the low efficiency cultivar were inhibited, they were not formed; At the level of 0.01mg/L, the sieve tube elements of the two cultivars were formed.

不同硼水平下，不同硼效率甘蓝型油菜品种根尖筛管分子的发育与形成受到影响：硼浓度为0.001mg／L时，两个油菜品种都不能形成筛管分子；硼浓度为0.01mg／L时，硼高效品种青油10号筛管分子可以形成，但结构受到破坏，而硼低效品种Bakow筛管分子的分裂与分化受阻，几乎不可能形成成熟的筛管分子；硼浓度为0.5 mg／L时，两个油菜品种都能正常生长发育。

To this end the original 'Blue Fox' radar is replaced by Ferranti 'Blue Vixen' coherent pulse-Doppler track-while-scan radar to improve acquisition and look-down capabilities, and other improvements are a MIL 1553B digital databus (making it possible to carry Sea Eagle anti-ship and ALARM anti-radar missiles) and the installation of the Marconi Sky Guardian 200 RWR, the JTIDS for secure voice and data links, two additional underwing hardpoints, wing tip stations for two AIM-9 Sidewinder short-range AAMs, wing improvements, a revised cockpit with HOTAS controls, larger drop tanks, provision for 25 mm Aden 25 cannon in place of the elderly 30 mm weapons, and possibly a Plessey missile-approach warning system.

为实现这一目的，原有的&蓝狐&雷达被新型的&蓝雌狐&连续波脉冲多普勒雷达替换，该雷达具有搜索的同时锁定目标的能力，可下视下射。其他改进包括加装军用1553B数据链，这使得MK2可以使用&海鹰&反舰导弹和ALARM反雷达导弹。另外加装了马可尼&天空哨兵200&通信系统，JTIDS保密语音及数据链路。增加了两个翼下外挂点，翼尖挂架可携带两枚AIM-9&响尾蛇&近距空空导弹。细节的改进还包括：机翼设计有所改进；改进的座舱设计；更大的副油箱；采用阿登25mm机关炮代替了以往的30mm机炮；可能加装了导弹告警系统。

O. TARAS + CDL-39 (Communication and DATA left 39). The TARAS makes a simultaneous, digital and secured audio and data communication possible on VHF and UHF channels. The TARAS and the CDL-39 besides by the all digital, disturbance-resistant frequency jump radio system Rockwell Collins Ra90 are supported.

q。 EWS-39第二代整合式电战系统（初期型JAS-39A/B的电战系统只有RWR、ECM模组以及两具翼尖BOP403干扰丝／火焰弹撒布器，EWS- 39将增添两具派龙携带BOP402 反制措施撒布器、一具雷射警告装置、一具飞弹近迫警告器和一具BOL500拖曳式RF诱饵。

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。