钢琴木材性能稳定。欧尔雅钢琴木料使用天然干燥、人工干燥和保温处理的方法确保钢琴发音的精确性。
Ouerya piano wood use the natural drying, artificial drying and thermal insulation method to guarantee the tone exactitude.
结果表明：(1)人工林气温效益显示出非生长季缓冷保温作用大于生长季缓热降温作用的特点。
Results show that; (1) The effect of air temperature in plantations get increased more significant in growing season than that decreased in growing season.
发泡体组合物，其制法，由其制成的人工土壤以及其在保温、隔热上的用途。
Foamed substances compound, the making process thereof, the synthetic soil made therefrom and its use on insulation.
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