变载 meaning in English

variable load

The discussion on calculation of reinforcing bars in varied cross section by the element stiff matrix of the tapered member
楔形杆单元刚度矩阵计算特殊变载面构件配筋的探讨
In the dissertation , a novel hybrid excitation constant voltage synchronous generator is adopted to improve the system performance , which takes the advantages of both electrical excitation and permanent magnet machines . a parted configuration is presented in order to design the structure of the generator . the adaptive digital adjustment is settled in principle using the single chip microcomputer 80c31 as the control core of the voltage regulator and adopting the proportion - integral - differential control as the control arithmetic , then a sample is made
论文对同步发电机的工作原理、性能特点、电机本体以及电压调节器的硬件和软件设计进行了研究，针对稀土永磁同步发电机变载、变转速情况下输出电压不可调的不足之处，采用一种新颖的电机型式? ?自适应复合励磁恒压同步发电机，综合了永磁发电机和电励磁发电机的优点，提出一种磁路分开的结构进行电机本体的设计，并选用单片机80c31作为电压调节器的控制核心，比例?积分?微分控制( pid )作为其控制算法，从原理上较好地解决了其电压的自动数字调节，并试制了一台样机。