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| 51. | Radio waves also travel at the speed of light, |
| 无线电波也是以光速传播的。 |
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| -- 来源 -- 新概念英语第四册 - Are there strangers in space? |
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| 52. | The universe is bathed in a sea of radio waves. |
| 宇宙浸泡在无线电波的海洋中。 |
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| 53. | They do not occur in a decided frequency, but rather through a special modulation, the radio waves identity. |
| 他们通常不发生在决定的频率，但更适合通过一个特定的调治，无线电波的特征。 |
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| 54. | a radio wave used to transmit and receive messages. |
| 用来传送和接收信息的无线电波。 |
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| 55. | radio; determines the direction of incoming radio waves. |
| 无线电通信：；决定输入无线电波的方向。 |
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| 56. | Sequence of electronic impulses or radio waves transmitted or received |
| （电子脉冲或无线电波的）信号 |
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| 57. | tropospheric refraction of radio wave |
| 无线电波在对流层中的折射 |
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| 58. | CurrentControlSet Services SNMP Parameters这个键值不可靠的许可权允许能访问注册表的恶意用户读取存储在 ValidCommunities键值中的 SNMP组名.这允许恶意用户通过 |
| 恶意用户也可以通过修改注册表键值来改变组名，这样将拒绝授权用户通过SNMP访问主机. |
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| 59. | The sun sometimes spoils the propagation of radio waves. |
| 太阳有时会影响无线电波的传播。 |
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| 60. | a radio wave with a wavelength less than 100 meters. |
| 一种波长在米以下的无线电波。 |
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