轴管

According to spatial analytic geometry,the mathematical model of intersecting of pipe and cone was established.

利用空间解析几何的原理建立了管锥相贯数学模型，用参量方程描述了管端相贯线焊接坡口的几何形状，该数学模型可应用于三轴联动火焰数控切管机。

Thin-walled tube with closed section is commonly used in large space structures. In order to calculate the time-dependent temperature fields in these structures subjected to heat flux and emitting thermal energy by radiation, the temperature gradients along both the axes and circumferences of the tubes should be considered.

薄壁闭口管是大型空间结构中的常用元件，为准确地计算以其为组件的空间结构在太空辐射换热条件下的瞬态温度场，必须同时考虑沿管轴向与横截面周向两个方向的温度梯度。

This mirror is out of the path of the light rays converging on the primary mirror and far enough off the wall of the tube to be away from tube currents, but in a position to reflect the convergent rays from the off-axis parabolic mirror.

这是出于镜面光射线道路的汇合的小镜子，远远不够的管过墙管应远离水流但能够反映收敛光线从离轴抛物面反射镜。

The pipe couplings should maintain the normal working condition under the maximum allowable deflexion and dislocation.

柔性管接头具有随一定末端载的能力。末端负荷是指管接头槽口可承受沿钢管轴向负荷的能力。

A method and apparatus for water degasification and distillation in an apparatus having a container (10) for a reservoir of water to be degassed and distilled, a boiler (12) adjoining the container and having a feed water conduit (22) connecting the container and boiler, a coiled tube condenser (27) within the container immersed in the water therein, the condenser coil having a vertically disposed longitudinal axis, a second conduit (24) in the boiler connecting the space above the water level therein to the inlet of the condenser so that steam flows from the boiler to the condenser, an outlet (29) on the condenser extending through a container wall for discharging the condensed steam as degassed distilled water, a heater (13) in the boiler for heating the water therein, a motor driven stirrer (101) axially of the coiled tube condenser and an ozone generating device (120) in the boiler for purifying the steam.

一种用于水脱气和蒸馏的方法和设备，该设备包括一容器(10)，该容器有一用于盛放待被脱气和蒸馏的水的贮池；还包括一与所述容器相连接的、其供水管(22)连接容器和沸腾器的沸腾器(12)；一在所述容器内、浸在其内的水中的线圈式管状冷凝器(27)，该冷凝器线圈有一竖直放置的纵向轴线；一在沸腾器内连接其内的水面上的空间与冷凝器的入口以使蒸气从沸腾器流至冷凝器的第二管道(24)；一在冷凝器上延伸穿过容器壁将经脱气和蒸馏的水作为已冷凝的蒸气排出的出口(29)；一在沸腾器内用于加热其内的水的加热器(13)；一与线圈式管状冷凝器同轴的马达驱动搅拌器(101)以及一在沸腾器内纯化蒸气的臭氧发生器(120)。

A diarch or triarchsiphonostele with exarch primary xylem was found at lower cotyledonary node zone.

果表明：银杏幼苗的轴向器官以子叶节区下部的初生维管结构先建立，其中柱类型是外始式二原型或三原型管状中柱

Structures of cochlea were measured on the images of position I and II ,including upper hemicycile width of Basal turn, lower hemicycle width of Middle turn, Middle turn height, Cochlea height, Modiolus area, length and width of Cochlea Nerve Canal on image I and Basal turn diameter, Basal turn lumen on image II.

在标准方位图像上设计并测量耳蜗9个结构径线(笔者分别定义为径线A—I，图Ⅰ A-G，图Ⅱ H-I)，径线A约衡量底周上半周宽度，径线B约衡量中周下半周宽度，径线C约衡量中周高度，径线D约衡量耳蜗高度，径线E约衡量蜗轴面积，径线F衡量蜗神经管宽度，径线G衡量蜗神经管长度，径线H约衡量耳蜗底周外径，径线I约衡量底周管径。

Relationship and control of axis sealing and internal pressure directly affects deformation process in tube hydroforming.

圆管液压成形过程中的轴向密封力与内压力的关系及控制直接影响到圆管的成形状态。

Because the support position of bearing has great effect to the frequency of coupled vibration of shafting, this paper researches the dynamic alignment problems of shafting at first so as to determine the support position of bearing rationally, especially the position of stern tube bearing.

由于轴承的支承点位置对轴系的耦合振动频率影响很大，所以本文首先研究了轴系的动态校中问题，以合理确定轴承特别是艉管轴承的支承点。

The calculating results of the dynamic alignment of shafting and the lubricating properties of marine stern tube bearing and the coupled vibration of shafting are identical with the results of experiments and practical inspection, which shows the correctness of the models and algorithms researched by this paper.

轴系动态校中计算、艉管轴承润滑特性计算和轴系耦合振动计算结果与实验或实测的结果基本一致，从而说明本文所研究的模型和算法的正确性。

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。