他收集的数据得出了一个关于房间回声持续时间、吸音材料的数量和质量以及空间体积之间关系的数学公式。
The data he compiled yielded a mathematical formula for the relationship between a room's echo duration, its quantity and quality of sound-absorbing materials, and its spatial volume.
2008年头11个月，相比于全美酒店房间的供应数量增加2.6%，延时居住型的酒店客房增加了9.2%。
The number of extended-stay rooms rose 9.2 percent in the first 11 months of 2008, compared with 2.6 percent growth for all hotel rooms.
在设计中，色彩协调是指颜色的搭配和颜色的数量能够令人愉悦，比如一个房间的装饰。
Color harmony is a pleasing combinations of colors and the amount of these colors in a design like a room decor.
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