Gear Head Ratio 齿轮头比
geometric head ratio [机] 几何水头比
Power head ratio 动力头速比
rated head ratio 设计水头比
Head Rice Ratio 整精米率
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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