| 释义 |
- abbr.帕（斯卡）（标准压强单位）
- 网络聚酰胺(polyamide)；尼龙；功率放大器(power amplifier)
n. | | abbr. | 1. Petroleum Administration 石油管理局 |
n. | 2. an electronic amplification system used to increase the sound level of speech or music in a large or open space such as a stadium or auditorium. 4. a fortified Maori settlement on a hilltop 5. personal assistant: someone whose job is to help a manager by writing business letters, organizing meetings, etc. 6. public address system: a set of electrical equipment that makes sounds louder, used especially for making announcements to a group of people or for playing music in a public place 2. an electronic amplification system used to increase the sound level of speech or music in a large or open space such as a stadium or auditorium. 4. a fortified Maori settlement on a hilltop 5. personal assistant: someone whose job is to help a manager by writing business letters, organizing meetings, etc. 6. public address system: a set of electrical equipment that makes sounds louder, used especially for making announcements to a group of people or for playing music in a public place | sym. | | abbr. | |
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