returned value specification 返回值说明
Parameter value language specification 参数值语言规范
file specification value 档案规格值
default file specification value [计] 缺省文件说明值
Strings constants with the same value are guaranteed by the VM specification to use the same instance.
具有相同值的字符串常量是由 VM 规范保证使用同一个实例的。
The EJB specification states that the key must be a unique value represented by a serializable object.
EJB规范规定：主键必须是一个可序列化的对象所表示的独一无二的值。
The JAX-RS specification puts a lot of value into HTTP and URIs but leaves a lot of space for hypermedia constraints.
JAX - RS规范充分肯定了HTTP和URI的价值，但是对超媒体约束却很大程度上有所保留。
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