The urban greenbelt is the important means and measure to improve the urban ecological environment and urban image and to change the quality of residents' life.
城市绿化隔离带是改善城市生态环境，改变城市形象，提高居民生活质量的重要手段和措施。
Studying the means and the apparatus composing in high precise dynamic measure of screw-pitch error have important academic meaning and practical applied value.
精密滚珠丝杠副是数控机床的关键功能部件，研究高精度的丝杠螺距精度动态测量方法和仪器组成具有重要的理论意义和实际应用价值。
Custody is concerned with limiting suspect and defendant's freedom, is the important means to guarantee the investigation and try going on smoothly, and is the most severe kind of compulsory measure.
羁押是限制犯罪嫌疑人和被告人人身自由，保证侦查和审判顺利进行的重要手段，同时羁押也是最严厉的一种强制措施。
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