腔

Three dimension metal plastic deformation of special shaped products was transformed into two dimension axis symmetry problem, analysis model of the continuous stream and strain rate fields were sough.

将三维金属异型材挤压塑性成形问题转化为二维轴对称成形问题，求解椭圆异型挤压金属塑性成形连续流动场和应变速度场的数学解析模型，并应用金属塑性成形理论，建立了精密挤压异型材优化模腔的数学模型，同时为精密快速地实现挤压模腔的CAD/CAM一体化目标提供了技术支持。

In order to improve the discrepancy of Ocarina, we used air window of whistle, air chamber of syringe together with the sound holes of Ocarina in making a sound adjustable Ocarina. The frequency spectrum was analyzed with computer sound fixing and ranging software and statistical software was employed to analyze the effects on pitch of area of sound hole and cubic of air chamber.

本研究为改良陶笛的缺失，利用哨子的气窗、针筒的气腔与陶笛的配孔式音孔结合，自创一种可调音的陶笛，并以电脑测音软体分析其频谱，利用统计分析其音孔面积与气腔体积对音高的影响。

The females incubated at 33 , their ovarium has powerful cortex, the germinal epithlium produce oocyte, its medulla degenerate into ovarian cavity. During sexual differentiation, mitochondria and smooth endoplasmic reticulum in cells of ovary increase in quantity, they disintegrate after sexual differentiation. There are a lot of big grana in cells of ovary before sexual differentiation, in the course of sexual differentiation the quantity of the big grana decrease, while small grana increase and peakafter sexual differentiation. The males incubation at 26 , cortices of their testes degenerate into a thin albuginea. Medulla are formed by testicular cords in which scatter spermatogonium.

33℃下孵化的小龟卵巢皮质发达，由原始生殖细胞产生卵原细胞，髓质退化成为卵巢腔，分化时卵巢细胞的超微结构显示线粒体和内质网的数量大大增加，它们在分化结束后解体，分化前细胞内有较多的大颗粒，在分化中大颗粒减少，小颗粒增多，在分化后小颗粒达到最多。26℃下孵化的小龟精巢皮质退化成为一层薄的白膜，髓质有许多睾丸管构成，管腔内有散落排列的精原细胞。

Studying mode structure of fiber laser by spherical surface scanning interferometer, in theory deducing the method of measuring width by spherical surface scanning interferometer, proposing two kind of narrow width fiber lasers.

5利用球面腔扫描干涉仪研究了光纤激光器的模式结构，从理论上对球面腔扫描干涉仪测线宽进行了分析研究，提出了两种窄线宽光纤激光器。

The spherical aberration of thermal lens of the active media influences the mode profile, the single-pass loss, the output power and other properties of a laser system.

激光晶体热透镜的球差效应会影响谐振腔的输出光束质量，以及腔内损耗和输出功率等特性。

The target strength term R〓 in A-T model is derived based on the quasi-static spherically symmetric cavity expansion theory.

四。基于静态球形空腔膨胀理论，考虑脆性材料在高速冲击作用下的破碎，求出了空腔膨胀压力，即靶体阻力R〓，为合理确定修正的流体动力学理论模型中靶体强度参数提供了合理的方法，求出的侵彻深度与试验结果符合较好。

The incidence of lower extremity atherosclerotic plaque, arterial steno- sis and obliterlation of type Ⅱ diabetes in old age was apparently higher than that of control group. The incidence of atherosclerotic plaque was mainly involved in femoral and popliteal artery. While the incidence of stenosis and obliterlation were mainly involved in the distal arteries below popliteal artery, especially, anterior tibial artery, posterior tibial artery and pedis dorsal artery.

结果 糖尿病患者下肢动脉血管管腔的硬化斑块、狭窄和闭塞的发生率明显高于对照组；硬化斑块的发生率以股动脉及腘动脉最为常见，而管腔狭窄、闭塞率以及腘动脉以下的远端动脉血管最为明显。

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。

At rotary vane pump cavity eccentricity to install a rotor, rotor cylindrical surface tangent and the pump cavity, equipped with the rotor shafts of the two rotary vane spring.

在旋片泵的腔内偏心地安装一个转子，转子外圆与泵腔内表面相切，转子槽内装有带弹簧的二个旋片。

Rotary vane pump in the eccentricity of the cavity to install a rotor, rotor cylindrical surface tangent to the pump cavity, the rotor slot with a spring with two rotary vane.

在旋片泵的腔内偏心地安装一个转子，转子外圆与泵腔内表面相切，转子槽内装有带弹簧的二个旋片。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。