抽拉式引出装置，适合吊装重物。
该装置对研制心律失常监护器是十分有用的，因为由它引出的心电信号，其心率和心律失常的出现均可调整和控制。
The ECG simulator is very useful in the development of an arrhythmia monitor, because the heart rate and occurrence of arrhythmia could be controlled.
利用此装置可开展电子枪蒸发、离子引出等多项实验研究。
Many experiments such as the evaporation by the electron gun, ions extraction can be carried out with this device.
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