sharpen edges 中文意思是什麼
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Abstract : the paper involves main aspects of russian steel tube industry, including recent general production situation, activities by major steel tube makers in technical updating and new product development to sharpen their competitive edges, steel tube import / export and measures taken to vitalize steel tube industry in the country
文摘:介紹了俄羅斯鋼管生產近期概況，主要鋼管企業在提高市場競爭力方面進行的技術改造和新產品開發的一些動態，俄羅斯鋼管進出口情況和復甦俄羅斯鋼管生產的應對措施。 -
The results show that ( 1 ) the " prediction & cancellation " method can successfully smooth the reverberation and sharpen edges of the echo, so may detect echoes which power are great than the reverberation background by odb in one channel, ( 2 ) the scaled probabilities method can effectually separate a echo which power is great than the background by 6db, while the reverberation is cancelled dr astically
果。計算結果表明， 「預測一抵消」演算法對混響有平滑作用，對回波則有突出信號邊緣的作用，單通道情況下的最小可檢測信號干擾背景功率比約為odb 。概率凈化演算法在信號干擾背景功率比大於6db的情況下能有效分離回波、抑制混響。
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