次轴

This paper first analyzes the NC-ASM work principle and the movement control request, uses the integration of machinery system design methods, designed its overall modelling, the mechanism and the control system, chose the structure suited the scriber mechanism, designed examination and prevent collision structure, carried on the thorough comparison and the analysis in this foundation to the scriber movement control realization key technologies, has chosen the most appropriate plan and has given the detailed explanation, has formed the design proposal.

以可编程控制器为控制核心，集中完成三轴联动控制信号和触摸屏串口通信信号的收发，在进行系统与外围设备配置时留有余地，以便进行二次开发。

It has important technological value and good prospect for conducting research on shock wave compression technique.

它是超音速飞机进气道与轴流压缩机械的一次重大技术结合。

The number and distribution of the singular points of streamlines in the cross section of steady flow through a curved tube are discussed by using the method of topological structure analysis.

利用拓扑结构分析方法，分析了弯曲圆管内定常流在横截面上流线的奇点个数及分布规律，给出了二次流的漩涡数目由 2个变为 4个，流态结构发生分叉现象的理论判据·进而，利用Galerkin方法，得到了弯曲圆管内定常流的流函数和轴向速度的半解析表达式，给出了流态结构发生分叉现象的临界Dean数，所得结果与理论判则一

The calculation method is studied for coupling impedance of coaxial sinusoidal slow wave structure,which considers the influence of synchronous point on the amplitudes of harmonic waves of quasi-TEM mode.

研究了计算同轴正弦型慢波结构耦合阻抗的方法，以及慢波结构参数变化引起的共振点变化对各次空间谐波振幅的影响。

Axial flow primary fan; speed stalling; cause analysis; preventive measures

轴流式一次风机；失速；原因分析；预防措施

The effect of curvature, torsion and Dean number on secondary flow, the isoline of stream function, the distribution of axial speed and wall friction is discussed in detail.

详细讨论了曲率、挠率、Dean数对二次流动、流函数等值线和轴向速度的分布以及壁面摩擦力的影响。

Leaf blade obtuse to subcordate at base, abaxially glabrous, secondary veins 3 or 4 pairs; twigs terete; rachis and pedicels glabrous.

叶片钝的到近心形在基部，背面无毛，次脉3或4 对；小枝圆柱状轴和花梗无毛。 21 Gaultheria leucocarpa 白果白珠

This design according to distributing the rational principle this time, adopt the way of testing many times, design Model YZ18 vibration road roller transmission progression of gearbox, assign every gear wheel of teeth count rationally, calculate every gear wheel and design the necessary parameter, and adopt the way of calculating according to the job requirements, design transmission gear wheel, axle and bearing at all levels of this gearbox ,etc., carry on the intensity to check to some important spare parts at the same time, so as to ensure the practicability originally designed.

本次设计根据分配合理的原则，采用多次试验的方法，设计了YZ18型振动压路机变速箱的传动级数，合理分配各齿轮的齿数，计算出了各齿轮设计所需的参数，并根据工作要求采用计算的方法，设计出了该变速箱的各级传动齿轮、轴和轴承等，同时对某些重要零部件进行了强度校核，以确保本设计的实用性。

The result showed that Ti02 nanowires with a diameter of 20 nm and a length up to several micron only can be synthesized in NH4F/glycol solution with a small amount of water (glycol: H20=39:1), 60V anodic voltage and 2h anodic time. The nanowires originated from the vertical splitting of anodically grown nanotubes.

结果表明，当醇水体积比为39：1时，60V电压下氧化2h，TiO2纳米管顶部的氧化层在缺陷处发生二次击穿溶解，产生自组装的孔核，场助溶解驱动力使纳米管顶部在孔核处沿管轴向垂直劈裂，形成直径20nm、长度可达几微米的TiO2纳米线。

When felting machine's reciprocated journey was 170→180mm, reciprocated frequency was 126→158 times min1, the speed of pilot driven shaft was 80→100 rmin^(-1), the space between pilot socket plate was 95mm, it had much better forming result for the length of 100-200mm bacilliform wood stick, the average rate of oriented forming was over 70%.

铺装头往复行程170~180mm，往复频率126~158次min^(-1)，导向驱动轴转速80~100rmin^(-1)，导向槽板间距95 mm时，对长度100~200mm木束定向铺装效果较好，平均定向铺装率达70%以上。

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。