内腔

The positions at cavity mirror of ray which propagates back and forth in the CCP laser resonator are analyzed, it shows that the CCP resonator with three equal dihedral angle errors (three dihedral angle errors are not 0) is an unstable resonator.

对在腔内往返传输的光线在镜面上的位置进行了分析，结果表明：3个二面角误差相同且不为零的角锥棱镜构成的谐振腔为约束非稳腔。

The numerical results show that, after the hot intrusion reaches the cold wall, some accumulates in the cold top corner, since the cold boundary layer flow cannot entrain all of the hot intrusion.

结果表明：当热入侵流抵达腔体冷壁后，由于冷壁无法卷入所有的热入侵流，热入侵流在冷上角堆积并产生一个反向流动，在冷壁边界层附近形成一个顺时针涡，该涡在浮力效应驱动下可返回热壁，并在腔体的冷热壁之间形成了腔体尺度的流体振荡，即内重力波。

The electric field component of TM310 mode in cylindrical coaxial resonator presents periodic distribution along with circumference, the cylindrical resonator circumference borders with tunable inductors is irregularity and uniformity of the distribution is destruction.

中国科学院电子学研究所北京 100080；②中国科学院研究生院北京 100039摘要圆柱型同轴谐振腔中的横磁模TMs10的电场分量沿圆周方向呈周期性均匀分布，电感调谐的圆柱型谐振腔的圆周边界不再规则，腔内场分布的均匀性遭到破坏。

METHODS: The 15 hybrid dogs were randomly divided into 2 groups. In the experimental group (n=9), a hole was drilled at the slope beneath the tibial plateau to reach the medullary cavity. The cavity was enlarged by an appropriate drill to confirm the size of the cavity. The absorbable polyamide intramedullary rods were inserted from the hole in tibial superior extremity, and the fracture was anatomically reduced with the rod passing through the fracture. Two locking nails, which were cylinder polyamide rods, were respectively located 2 cm from the cutting site, in the distal and proximal ends. Auxiliary plaster external fixation was performed for 4 weeks. In the control group (n=6), quincunx intramedullary nails of the same diameter with 4 pre-drilled holes were accordingly inserted into the cutting segment, and 2 screws were locked in the distal and proximal ends, respectively.

15只杂种犬随机分为2组，实验组(n=9)：在距离胫骨平台下斜坡处钻孔入髓腔，用合适钻头扩大髓腔，确认髓腔大小，从胫骨上端开孔插入聚酰胺钉，解剖复位骨折端并使该钉通过骨折处，在距离截骨处2 cm处的远近端分别锁上2枚锁钉，锁钉为圆柱形聚酰胺棒，辅助石膏外固定4周；对照组(n=6)：同样插入相应直径的、已预钻4孔的梅花形髓内钉截段，在骨折端的近端及远端分别锁2枚螺钉，辅助石膏外固定4周。

Of the top of the superior aortic recess extended to the level of the aortic arch from which the branchiocephalic trunk arises. At the level of the aortic arch, 100%of the lymph nodes of superior vena cava were located among the aortic arch, superior vena cava and trachea. At the level of azygos vein, 100%of the lymph nodes of azygos vein and the superior aortic recess were located among the superior vena cava, arch of azygos vein, trachea and concavity of aortic arch.

主动脉弓和奇静脉弓在同一横平面占20.00%±7.30%，40.00%±8.94%的奇静脉弓在主动脉弓凹面平面；②80.00%±7.30%的主动脉上隐窝上界位于主动脉弓右前端头臂干起始处；③在主动脉弓平面，腔静脉后淋巴结位于主动脉弓、上腔静脉和气管之间，出现率为100%；④在奇静脉弓平面，奇静脉弓淋巴结和主动脉上隐窝位于上腔静脉、奇静脉弓、气管和主动脉凹面所围成的气管前间隙内。

Grounding on the purpose of industrialization of laser, based on the thought of astigmatism compensation and thermal stability of the cavity, we employed high power LD to pump Nd:YVO4 crystal and used the introcavity frequency doubling with type 1 noncritical phase-match LBO crystal, which has high damage threshold. The cavity parameters are optimized by the use of ABCD theory and the resonatorstructure CAD software.

立足于激光器的产品化，基于谐振腔的像散补偿和热稳定性的设计思想，采用大功率LD单端泵浦Nd：YVO_4晶体，具有高光损伤阈值的Ⅰ类非临界相位匹配LBO晶体腔内倍频方案，应用ABCD定律和腔结构模拟软件CDA设计并优化了一组腔参数。

Results indicate:(1) The newly developed simulation technology can form fairly average and easily controllable back pressure downstream the inlet, so it can he used to investigate the back pressure characteristics of hypersonic inlets.(2) By regulating the valve of injection pipe, the simulation technology can realize the switch of hypersonic inlet started state and unstarted state in about 8 milliseconds, so it is suitable to investigate the starting/unstarting/resarting problem of hypersonic inlets.

结果表明：(1)所提出的凹腔喷流技术可在进气道下游形成较为均匀的、可控的背压环境，因此可用于进气道的反压特性研究；(2)适当调节凹腔的喷流总压，并在实验中实时控制阀门的开度，凹腔喷流技术能够在较短的风洞实验时间内（约8s）实现进气道起动、不起动、再起动流态之间的切换，因此可用于进气道的不起动／再起动特性研究。

The paper studies some problems about engraving Chinese characters on sphere cavity inner surface for parallel robot,including tool path mapping method from plane to sphere cavity inner surface,circular arc interpolation and cutter-orientation real time planning algorithm etc.

研究了并联机器人在球腔内面雕刻汉字所遇到的若干问题，包括平面刀路向球腔内面刀路的映射方法、圆弧插补及刀具姿态实时规划算法等，给出了算例并用 6 HTRT并联机器人进行了验证，为并联机器人在汉字雕刻领域的实际应用奠定了基础。

Ordinary no destruction , the ossicular chain can be erosions and destruction , but more slight and no transitional .the major CT findings in simple chronic middle ear on 2 patients were soft tissue in middle ear cavity ,and 1 patient findings hydropneumo, the bone of tympanic cavity cirrhosis ,no destruction .

其它征象包括乙状窦、鼓室盖、水平半规管、面神经管水平段骨质破坏。29例肉芽肿型中耳炎CT表现为中耳腔内的软组织密度影，部分有液平，鼓室壁增生、硬化，骨质破坏少见，听小骨可出现吸收破坏，但程度较轻，一般无移位。2例单纯型中耳炎表现为中耳腔内的软组织密度影，1例有液平，鼓室壁骨质硬化，无骨质破坏。

As compared with the results of cocventional intracavitary radium therapy in combin- ation with Co~(60) parametrial irradiation (5-year survival rate 32% in stage III), rot- ational (34.1%, 3-year survival), and swing irradiation (48.8%, 3-year survival), external...

疗效与一般采用传统的腔内镭疗与~(60)钴宫旁照射的方法其Ⅱ期5年治愈率32％，和采用~(60)钴旋转照射及钟摆体外照射3年生存率34.1％，或48.8％相比，临床上有使用价位，对于一些阴道狭窄，过短不适于腔内治疗的患者也无禁忌。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。