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- Methods Dual energy X-ray absorptiometry was used to measure the densi ties of lumbar v ertebrae and left mandible angle of all subjects. 方法采用双能X线吸收法测量全部研究对象的腰椎与左下颌角的骨密度,在同性别组内对比骨质疏松症组与正常组的下颌角骨密度的差别。
- Moreover, the compr essive experiments for ZL104 foam alloy and aluminum foam with different densi ties were conducted.The results showed that the densit... 另外,对不同密度的泡沫ZL104合金及泡沫纯铝进行了压缩试验,结果表明:密度对压缩力学性能和吸能性具有显著影响;
- They want to loosen their ties with Britain. 他们想要削弱同英国的关系。
- He maintained close ties with the masses. 他和群众保持着密切的联系。
- This city has a population of more than 1,000,000. 这个城市人口超过一百万。
- We have established trade ties with these regions. 我们和这些地区建立了贸易关系。
- A desert has no settled population. 沙漠没有固定的居民。
- She had to sever all ties with her parents. 她不得不断绝与父母的一切联系。
- This evidence ties in with what we already know. 这证据与我们已掌握的情况相符。
- There was a steady increase in population. 人口在不断增长中。
- What is the population of this country? 这个国家的人口是多少?
- Disease has decimated the population. 疾病使大部分人死亡。
- The population of the island has sunk from100 to20. 这个岛上的人口从容不100人减少到了20人。
- What is the population of Ireland? 爱尔兰人口有多少?
- There was a swell in the city's population. 该市出现过人口膨胀。
- In ten years the city's population expanded by 12%. 十年之中,该城人口增加了百分之十二。
- The population of this country rose by 10 percent. 这个国家的人口增长了百分之十。
- What is the total population of Japan? 日本的总人口为多少?
- He doesn't want any ties; that's why he never married. 他不愿受束缚,所以不结婚。
- The town has a population of ten thousand. 这个镇有一万人口。