earth ground meaning in English
大地
Examples
- Connect your tuner and transmitter to a good earth ground
把调谐器和发射机安置在一个好的地理位置。 - Do not apply more than 250v ( ac or dc ) between any input and earth ground
任何被测试对象对地电压，包括直流和交流，不能超过250v 。 - When using a commercially available switching regulator , ground its chassis grounding and earth grounding terminals
当使用商用开关调整器时,接地它的底盘接地和地面接地终端。 - When using a commercially available switching regulator , ground its chassis grounding and earth grounding terminals
当使用市场上可买到的开关调节器时,将其机壳接地端子与地面接地端子接地。 - Generally , the anion concentration close to the earth ground is thousands of anions per cubic centimeters . when in the city , it is only less than 600cm3 due in air pollution . anion is described as vitamin in air as food vitamin to human body for it can prevent illnesses as the following
一般情况下，地球表面负离子浓度在每立方厘米千个，在城市中，由于环境污染，负离子浓度在600个cm ?以下，空气中负离子就像食物中的维生素一样，对人的生命活动有很重要的影响，它能促进人体的生长发育，对人体有多种保健功能，主要表现在：