§13.小提琴的构造 3.琴箱③背板。背板一般都用枫木(erable)来做。这种木材在油漆后外观有着最好的“波动”效果,也表现出令人满意的机械性能(抗形变、弹性模量等等)。这些特性,依树木的生长条件、取材所选的树干部位等等而变化很大。手艺人认为好的枫木,多产自罗、匈、捷等国。按常规,木材在使用之前,先要经过长期的干燥过程(至少七、八年),以使它的材 §13. The construction of the violin 3. The box ③ backplane. Backboards are generally made of erable. This wood has the best “wave” effect after painting and also exhibits satisfactory mechanical properties (resistance to deformation, modulus of elasticity, etc.). These characteristics vary greatly depending on the growth conditions of the trees, the parts of the trunk selected from them, and the like. Artisans think good maple, prolific from Romania, Hungary, Czech and other countries. As a general rule, wood is subjected to a long-term drying process (at least seven or eight years) before use