Gear Head Ratio 齿轮头比 ; 齿轮总比率
geometric head ratio [机] 几何水头比
high head ratio 高成穗率
rated head ratio 设计水头比
Power head ratio 动力头速比
Head Rice Ratio 整精米率
fuel head mixture ratio 燃料混合比
The ratio of bad loans to the total, property included, has tripled to 4.6% over the past 12 months as unemployment appears to head inexorably towards 20%.
西班牙银行业5月份的不良贷款比例（含房产不良贷款）已经高达约4.6%，和一年前相比增长了3倍，因为西班牙的失业率似乎有飙升至20%之势。
The ratio of GDP per head in the three richest regions to the three poorest increased by almost a tenth between 1990 and 2009.
从1990年到2009年，最富有的三个地区与最贫穷的三个地区的人均GDP比值几乎上涨了十分之一。
This phased approach means that the cost-to-benefit ratio isn't rosy either, and unless the head team can deploy aggressively and successfully, the project is at risk of being shut down.
分阶段方案意味着效益成本比也并不乐观，除非主管团队能积极推广并获得成功，否则项目也存在着关张的风险。
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