Study found that female smokers smoke every 10 years, bone mineral density is reduced by 2.3%-3.3% fall in bone density leading to fractures and osteoporosis incidence rate rose significantly.
研究发现，女烟民每吸烟10年，骨矿物质密度就会降低2.3%―3.3%，骨质密度下降会导致骨折和骨质疏松症发病率大增。
The experimental results show that the engine performance with this system is reliable, and the specific fuel consumption and the density of exhaust smoke are greatly reduced.
试验结果表明，增设的供水系统工作性能的可靠，掺水燃烧时比油耗及排烟度等明显下降。
The experimental results show that the engine performance with this system is reliable, and the specific fuel consumption and the density of exhaust smoke are greatly reduced.
试验结果表明，增设的供水系统工作性能的可靠，掺水燃烧时比油耗及排烟度等明显下降。
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