... underload relay 负载不足继电器，欠载继电器 underlying metal 底层金属 undermoderated 欠调制的，调制不足的；慢化不足的，欠慢化 ...
双语例句
1
They are cash settled and cannot result in the delivery of the underlyingmetal.
所有的合约都以现金结算，因此不会有任何相关实物金属的交付。
2
It runs without the need for an underlying operating system - something called "running on the bare metal" (see Resources).
它无需底层操作系统便可运行—也就是所谓的“在裸机上运行”(见参考资料)。
3
During the laser sintering, due to the large liquid phase viscosity and surface tension, the balling effect occurred when the molten did not wet the solid metal particle and the underlying substrate.