Real-estate is an industry of intensive capital with features that initial high investments, long circle of funds, bad liquidity.
房地产行业是一个典型的资金密集型行业，具有初期资金投入量大、回收期长、变现能力差的特点。
The waveform generated by Boxcar has such a long circle that generally speaking, it is impossible for ordinary oscilloscope to display it.
取样积分器输出波形周期很长，在普通示波器上难以直接显示。
The waveform generated by Boxcar has such a long circle that generally speaking, it is impossible for ordinary oscilloscope to display it.
取样积分器输出波形周期很长，在普通示波器上难以直接显示。
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