adj. double-barreled
misc. doublebarreled ; doublebarrelled
根据设计者的设计，将允许有每天大约300辆火车穿梭在圣哥达的双管隧道中，最高设计时速达250Km/h（155mph）。
Around 300 trains should be able to speed through the Gotthard's twin tubes every day, at up to 250 kilometers per hour (155 mph) for passenger trains, according to planners.
双管和多管布置时，由于管间的热干扰作用，系统的换热量将不同程度降低。
When double and multi-U-tube ground heat exchangers are used, heat transfers of the system decreases due to the thermal disturbance among the tubes.
提出一种新的双管组态共射-共基级联高频谐振e类放大器，介绍了其电路构成、工作状态、特点和电路的工作原理，最后还给出了实验结果和数据。
In this paper a new type of cascode HF resonant Eclass power amplifier using double triode is presented. The construction, character, working state and theorem of this circuit are also described.
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