free space
柯林斯词典
1. N a region that has no gravitational and electromagnetic fields: used as an absolute standard 自由空间; 没有重力场和电磁场的区域，被用作绝对标准 (Also called (no longer in technical usage) vacuum)
返回 free space
1. N a region that has no gravitational and electromagnetic fields: used as an absolute standard 自由空间; 没有重力场和电磁场的区域，被用作绝对标准 (Also called (no longer in technical usage) vacuum)