It turns out at that time of the year, in the summer, that birch was sending more carbon to fir than fir was sending back to birch, especially when the fir was shaded.
结果还表明在每年的这个时间，在夏天的时候，纸皮桦给花旗松送的碳比花旗松反送给它的要多，特别是当花旗松见不到阳光的时候。
Representative mixed plantations A, B of Cyclocarya paliurua Ilinsk and Chinese fir and pure stand of Chinese fir in Xiqin Experimental Forest Farm were selected, and their biomass was determined.
在西芹林场选择有代表性的青钱柳、杉木混交林A、B两种和杉木纯林，进行生物量测定。
A novel fast algorithm for FIR filter is presented, the large computational volume of FIR filter with many taps is lowered down.
提出了一种新的FIR滤波器快速算法，显著降低了实时信号处理中的长阶数FIR滤波器的运算量。
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