With the use of a linear method a mathematical model is derived of the secondary circuit heating unit for a PWR nuclear power plant along with a quantitative analysis of the effect of additional elements on the water feed in factor.
运用线性方法推导出压水堆核电机组二回路加热单元的数学模型及附加成份对进水系数影响的局部定量分析方法 ,并在此基础之上给出了二回路高压给水单元进水系数的计算通式 ,从而为压水堆核电机组二回路应用“循环函数法”开辟了一条崭新的道
In order to simplify the work of pre-process in finite element analysis of large scale bolted rock discontinuities,a combined element model of bolted rock discontinuities is presented based on the displacement interpolation function of discontinuity element and the stiffness matrix of bolt element.
为了简化大规模加锚岩体结构面有限元分析的前处理过程,通过结合结构面单元的位移插值函数和虚拟锚杆单元的刚度矩阵,提出了加锚岩体结构面组合单元模型。
Since pre-stressed concrete box girders usually have a large number of curve pre-stressed tendons,a type of combined element is presented to simulate the prestressed tendons of box girders,and then the number of elements can be significantly reduced.
由于预应力混凝土箱梁中通常存在大量曲线预应力钢筋,提出一种组合单元,并用该单元模拟箱梁中的预应力钢筋,该方法可使结构分析时单元数量大大降低。
Through contrastive analysis of calculated value and test data, it is proven feasible and correct to use composite element and externally prestressed element together to analyze externally prestressed concrete structure, while providing support and experience to the numerical simulation in bridge structure.
采用组合单元模拟钢筋混凝土结构,能全面考虑混凝土的开裂、塑性等问题;并推到一种体外预应力单元:在忽略摩擦的情况下,能够考虑体外筋在转向块处的滑移作用,从而对其变形与受力做出更准确的模拟。
To analyze the performance of reinforced concrete structures numerically, the composite element is developed, which inherits and expands the features of the original isoparametric element, and can consider contributions of concrete and steel to the element stiffness separately.
组合单元是一种针对钢筋混凝土结构数值计算而产生的单元形式,是对原有实体等参元的继承和拓展,能够分别考虑混凝土和钢筋各自对单元刚度矩阵的贡献。
Based on the composite element,3D model of concrete creep is created firstly.
以组合单元为基础,建立混凝土徐变的三维计算模型:将结构的变形、内力状态、结构形式及约束情况均沿时间轴进行划分,再根据结构在每个时间点上各参数的变化值,推导出了混凝土徐变计算的递推公式;又基于虚功原理建立混凝土徐变刚度矩阵,绕过应力与应变,直接通过位移增量计算自由徐变应变增量的等效荷载,提高了徐变数值计算精度;组合单元是对原有实体等参元的继承和拓展,能够分别考虑钢筋和混凝土各自对单元刚度矩阵的贡献,而两者又通过自由度变换的方法有机的结合在一起,构成一种可专门用于模拟钢筋混凝土结构的单元形式。
A new kind of PWM control circuit module of the cell cascaded multilevel inverter which is based on the CPLD is explored,in allusion to the blank actuality of special purpose PWM control IC which the multilevel inverter is faced with at the present time.
针对目前多电平变频器在国内、外所面临的脉宽调制(PWM)控制专用IC的空白现状,研究开发了一种基于CPLD的单元组合式多电平变频器拓扑的移相PWM控制专用电路模块。
In allusion to some problems for the traditional vegetable dryer with warm air and simple far-infrared radiation heating dryer,the technique method with combinative heating and parallel-leading flow of air was introduced to optimize the combination of far-infrared radiation and warm air,which is a new technique with combination heating.
针对传统的蔬菜热风加热干燥和远红外辐射加热干燥方式所存在的问题,采用组合加热和并流引风技术方案,将远红外辐射与热风两种加热方式优化组合,充分发挥各自优点,整合成为一种新的组合加热式干燥技术。
Temperature-measuring thermocouple. Type of heating element and polarity symbols can be specified.
温度测量热电偶。可指定加热单元和极性符号的类型。
The single-effect evaporator consists of a container or surface and a heating unit.
单效蒸发器由一个容器或蒸发表面和一个加热单元构成。
terminal heating & cooling units
终端加热和冷却单元
For information on the fuel heater, refer to Fuel Heater in this group.
有关燃油加热器资讯，请参阅本单元“燃油加热器”。
The multiple-effect evaporator uses the vapour produced in one unit to heat a succeeding unit.
多效蒸发器利用一个单元产生的蒸汽加热后一个单元。
Install the A/C condenser (refer to Group 24, Heating and Air Conditioning).
安装A/C 容电器（请参阅单元24，加热和空调）。
Modeling for Backwater Heating System and Considering the Coordinated Intelligent Control for Generator-transformer Unit in Thermo-electric Plant;
热电厂回水加热系统建模及单元机组协调智能控制的研究
Remove the blower motor and blower wheel unit from the heater-A/C housinSee Blower Motor in this group for the procedures.
从加热器-空调外壳拆卸鼓风马达和鼓风轮单元。程序见本单元之鼓风马达。
Design for Temperature Controller of Industrial Furnace Based on Single Neuron Fuzzy Self-adaptive PID Control
基于单神经元模糊自适应PID控制的加热炉温度控制器设计
With the heater control unit in the HEAT position, operate engine with coolant tank cap tightene
让加热器控制单元处于HEAT（加热）位置，旋紧冷却剂贮藏箱填压力/排气盖之后操作引擎。
cartridge heating element
筒形加热器,筒式加热元件
stratit element
钼[钨]电阻加热元件
vacuum tube solar heating element
真空管太阳能加热元件
Finite element analysis on preheating process of N_2O monopropellant thruster
N_2O单组元推力器预热过程有限元分析
single-channel heated stylus recorder
单道加热式笔录记录器
multielement prestressing
多单元构件预加应力
vertical turner flexible machine cell
立式车削柔性加工单元
If equipped with air conditioning, install air compressor and charge A/C system (refer to Group 24 Heating and Air Conditioning).
如果配备有空调，安装空气压缩器和加注A/C系统（参阅单元24加热和空调）。
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