流控制

The feeding head can rotate around axial Z and axial X or Y. With the help of Siemens NC system, which can overcome the limitations of feeding heads working space, we can make axle sleeve and so on. It can be used to repair irregular shape products in laser cladding, such as metallic sheath. Using 3D coaxial feeding head, large area laser refabrication was carried out in metallic sheath.

由于原数控系统是非开放性的，不宜直接在原有系统上进行二次开发，考虑到现有条件，采用单片机控制二步进电机以实现送粉头能绕Z轴转动和绕水平轴转动，加上原有数控系统的在Z轴方向上的运动配合使送粉工作头具有三维空间工作能力，它克服了普通送粉头工作空间的限制，同时还具有粉末流束焦点可调功能。

The authors present an enhanced back-stepping control structure based Nonlinear Disturbance Observer with aerodynamic and lateral thruster.

在分析喷流干扰的基础上，建立了含有干扰放大因子的复合控制的弹体模型。

For overcoming the disadvantages of uncertainties and unknown disturbance, the back-stepping control structure based on NDO is designed in virtue of NDO's approaching ability.

在分析喷流干扰的基础上，建立了含有干扰放大因子的复合控制的弹体模型。

Spiral baffle plate heat exchanger improved heat changing efficiency salient, reduced the press with great, control the damage from the shake, reduced the possibility of dirt subside, it has many merit.

摘要螺旋折流板换热器显著地提高了换热效率，大幅度降低了压力降，控制了振动造成的破坏，减少了污垢沉积的可能性，具有诸多优点。

Dynamic balance valve works By changing the balance of the spool valve to accommodate the overflow valve area before and after the change, to achieve the purpose of flow control.

动态平衡阀门的工作原理通过改变平衡阀门的阀芯的过流面积来适应阀门前后的变化，从而达到控制流量的目的。

The results of analysis and test indicate these method, such as decreasing the size of raw material and using advanced ball grinder to improve the uniformity of the distribution of the materials in the slurry, adjusting the spray granulator to improve the characteristics of tablets, adjusting the sintering temperature curve to improve the uniformity of sintering reaction on different part of ZnO nonlinear resistor, and so on, can improve the surge energy absorption capability.

生产中应尽量减小电阻片缺陷范围；适当减小原料颗粒粒径、采用更先进的搅拌球磨设备和高效的分散剂均能提高原料混合的均匀性，调整优化造粒机控制参数提高造粒质量，优化烧结温度提高反应均匀性等措施，能够大大提高电阻片通流容量。

The results showed that the de-fluidized phenomena could be avoided through controlling the fuel input and bed temperature.

结果显示，通过控制燃料量和反应温度，可以避免流化恶化现象发生。

Thus, the brake circuit as shown in Figure 5-24, each brake relief valve of the control of oil in different directions.

因此， 这种刹车回路如图5-24所示，每个刹车溢流阀各控制不同方向的油液。

The hydraulic poppet valve is one of the most important component in the hydraulic transmission and control, whose characteristics of the inner flow field directly influents the valve s performance, especially the moving valve cone.

液压锥阀是流体传动与控制技术中重要的基础元件，锥阀内的流场特性直接影响阀的性能，特别是锥阀阀芯在运动过程中的流动特性对阀的工作性能有很大的影响。

In comparison with bugle shaped nozzle, bifurcated nozzle downward jet angle 45°, cow-nose nozzle and three-hole nozzle, in all, the last two are better than the former and bifurcated nozzle downward jet angle 45 is better than bugle shaped nozzle; Cow-nose nozzle is helpful for guaranteeing the product's quality, in order to protect jet flow from eroding the strand at narrow face, gain uniform temperature distribution at cross section and decrease heat flux, adding the block's width to 100 mm. Three-hole nozzle is advantageous to increase flux and casting speed, but should avoid weak shell thickness in the center broad. In the real production, setting the SEN's immersed depth or plugging the hole at the bottom can adjust the flow and temperature distribution in the mold.

对比喇叭形水口，双侧孔水口(45°)，牛鼻子水口和三孔水口，总的说来后两者优于前两者；而双侧孔水口(45°)又优于喇叭形水口；牛鼻子水口和三孔水口比较各有特点，前者对保证铸坯质量有利，为防止流股对窄面的冲击，增加挡块宽度到100 mm，可使结晶器横截面上温度分布更加均匀，降低窄面热负荷；后者对增加流量，提高拉速非常有利，但要防止中孔射流过强导致铸坯中心坯壳变薄，在实际生产中可通过控制水口浸入深度或塞住浸入式水口的底孔来调节结晶器中的流动与温度分布状态。

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％。