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A pulldown resistor to the negative rail will allow the output to approach that rail (provided the load impedance is high enough, or is also grounded to that rail), but only slowly.
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一个下拉电阻器将允许输出迫近迫近该电源轨(所提供的负载阻抗足够高,或负载也是接地的)，但这样速度较慢。 |
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A pulmonary disease of horses that is characterized by respiratory irregularities, such as coughing, and is noticeable especially after exercise or in cold weather.
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肺气肿马所患的肺部疾病，其症状是呼吸系统不正常，例如咳嗽，在奔跑之后或是寒冷季节尤为明显 |
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A pulsation or throb.
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（心脏）悸动，搏动 |
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A pulse from an intense laser or particle beam, however, creates a disturbance in the plasma.
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然而，一个从高密度的雷射或粒子束所产生的脉冲，可以对电浆产生扰动。 |
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A pulse or circuit that initiates the action of another component.
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触发器，触发电器引发其他部件运动的脉冲或电路 |
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A pulse to gate the output of a core memory sense amplifier into a trigger in a register.
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将磁心存储器读出放大器的输出选通到寄存器的触发器中的一种脉冲。 |
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A pump in the boiler sends hot water round the central heating system.
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热水器中的水泵将热水输送给集中供热设备. |
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A pump operated by a windmill.
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风力抽水机由风车操纵的抽水机 |
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A punctual person always finishes everything ahead of time.
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一个守时的人总是把事情提前做好。 |
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A punctual person is in the habit of doing a thing at the proper time and is never late in keeping an appointment.
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一个守时的人养成了按时做事的习惯，这样的人言必信，行必果。 |
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A punctuation mark(,) used to indicate a separation of ideas or of elements within the structure of a sentence.
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逗号一种标点符号（，），用于表示句子结构内思想或要素的分开 |
