... field value required 所需的字段值 ; 字段值所需 ; 外地所需值 Value is required 值是需要 ; 值是必需的 A value is required 必须填写 ...
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但是，当某个输入字段是必需的，或者由于该字段是必需的而应该设置为缺省值时，您不应该删除该字段。
However, you should not remove an input field when the field is required or should be set to a default value because the field is required.
如果在DB 2中建立了查找表来保存字段的值的有限集，那么这对于该字段是必需的。
This was necessary for fields where lookup tables were established in DB2 to hold the limited set of values for that field.
这是必需的，因为散列值是对象的地址，并且如果您移动该对象，则需要维护它。
This is required, because the hash value is the address of the object and you need to maintain this if you move the object.
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