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- The square wave source is an impulse source in which digital technique is used.It has the advantages of rigid phase, high frequency stabilization and high antijamming. 方波电源是采用数字技术的脉冲电源,具有相位严格、频率稳定度高,抗干扰能力强等独特的优点。
- RFI or EMI can be caused by sources such as TV or radio broadcast signals or it can be caused by impulse sources, as in the case of high voltage arcing (see Figure 3-5). RFI和EMI可能由诸如电视或无线电广播等信号源引起，也可能由脉冲信号源引起，就象高压电弧的情况那样（见图3-5）。
- The news comes from a reliable source. 这消息来自可靠的来源。
- We were seized by a sudden impulse to run. 我们身不由己突然想跑。
- His irresistible impulse to set fire to shoe shop. 他放火烧鞋店的不可抗拒的冲动。
- He bought the house on an impulse. 他凭一时冲动买下了这所房子。
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- He felt an irresistible impulse to jump. 他突然有个无法抗拒的冲动，想跳下去。
- My uncle bought the house on an impulse. 我叔叔一时冲动买下了那房子。
- Solar energy is a new kind of source of energy. 太阳能是一种新型能源。
- The sun is the ultimate source of energy. 太阳是能量的最基本来源。
- A source of irritation or annoyance. 令人生气的事或者引起烦恼之事
- The groundwork or source of something. 基础，根源某事物的基础工作或根源
- An irresistible impulse to sneeze. 抑制不住的想打喷嚏的冲动
- Where is the source of the Rhine? 莱茵河发源于何处？
- A strong creative impulse; divine inspiration. 灵感，神感强烈的创造欲; 神明启示
- He's been a source of discord and worry. 他成为不和和烦恼的根源。
- A source of harassment, annoyance, or pain. 使人痛苦的东西骚扰，烦恼或痛苦的来源
- Is the water polluted at source or further downstream? 河水是在源头还是在流出之後受到污染的？
- Hard work is the ultimate source of success. 努力工作是成功之本。
