Bluetooth is working on wireless audio tech I once thought was impossible - what to know
蓝牙特别兴趣小组表示，它正在制定无损和空间音频的标准协议。
Government rolls out mobile labs to monitor National Highway quality
正在拉贾斯坦邦、古吉拉特邦、卡纳塔克邦和奥里萨邦进行试点，使用配备超声波脉冲计和沥青密度计等无损检测工具的移动质量控制车。
