developable
/dɪˈveləpəbl/adjective
1- able to be developed, in particular可发展的, 尤指：
1.1
- (of land or property) able to be adapted or improved so as to become productive or profitable（土地, 财产）可开发的, 可改造的。
1.2
- Geometry (of a curved surface) capable of being flattened into a plane without overlap or separation, as with a cylinder【几何】（曲面）可展开（成平面）的（如圆柱体）。
1.3
- Mathematics (of a function or expression) capable of being expanded as a series【数】（函数, 表达式）能作为级数展开的。