标准摘要
[中文适用范围]： ISO 5721的本部分规定了农用拖拉机操作员前方视野的要求、测试程序和验收标准。 [外文原描述]： ISO 5721-1:2013 specifies the requirements, test procedures and acceptance criteria for the field of vision to the front of the operator of agricultural tractors.
英文名称Agricultural tractors — Requirements, test procedures and acceptance criteria for the operator's field of vision — Part 1: Field of vision to the front