Further, the paper discussed the necessity of using full concrete lining for the Xiaowan plunge pool and made new proposals for its bottom elevation, length and shape.
文中还讨论了小湾水垫塘采用全面混凝土衬砌的必要性，并对水垫塘底板高程、长度及体型提出了新建议。
A full-function control system of counting is designed on a PLD device using VHDL language. It can measure and display the length and send out a control signal according to the set value.
利用VHDL语言在PLD器件上设计全功能计数控制装置，使其实现计量、显示长度并根据预置数输出控制信号的功能。
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