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step-up ratio
auto. 转速升高比; 挂高速档; 变速比; 步阶比
construct. 变压器升压比
el. 升压变压器升压比
tech. 升压比; 升高系数; 变压器升压比
step up ratio
wind. 增速比; 升压比率
step-up ratio
: 1 phrase in 1 subject
Rail transport1

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