box ratio  长宽比

gear box ratio  齿轮箱传动比

box-box  订

box-box connection  双母螺纹接头; 批

Junction Box， Connection Box， Connector Box  分线盒

axial compression ratio and slenderness ratio  轴压比和长细比

B-C ratio (benefit-cost ratio)  边界代表

benefit-cost ratio (B-C ratio)  损益平衡点

focal ratio (=focal-length ratio)  焦比

grinding ratio(G-ratio)  磨削比

maximum ratio combing according to signal to noise ratio  基于信噪比最大比加权

recirculation ratio recycle ratio  压力调节阀

recycle ratio recirculation ratio  经济回流比

signal-noise ratio (=signal-to-noise ratio =SNR)  讯噪比

stop ratio and start ratio in time segment  时段停车率和时段启动率

price--earnings ratio;P/E ratio  市盈率; 市价盈利率

Box Body， Box Cover  盒体、盒盖

box-girder and box-pier  箱梁与箱形墩

box-on-box  可编程片上系统