simple valley 中文意思是什麼
simple valley
解釋
單一構造谷-
They crossed it by a simple bridge, in character with the general air of the scene ; it was a spot less adorned than any they had yet visited ; and the valley, here contracted into a glen, allowed room only for the stream, and a narrow walk amidst the rough coppice - wood which bordered it
他們從一座簡陋的小橋上過了河，只見這座小橋和周圍的景色很是調和。這地方比他們所到過的地方要樸素些。山谷到了這兒也變成了一條小夾道，只能容納這一灣溪流和一條小徑，小徑上灌木夾道，參差不。 -
A simple introduction to forest fireproof of natural forest reserve on middle reaches of huanghe river valley in henan province
長江上遊人工林與天然林土壤結構質量及保水抗蝕性研究 -
Some problems and difficulties urgently to be solved in seismic research of high concrete arch dams were reviewed, including to find simple and practical methods for comprehensive analysis of dam foundation, dam body, and reservoir water, to work out rational safety evaluation criteria for high arch dams, to study the dynamic behavior of the strength of concrete materials, to develop the seismic input model of the dam - site river valley, and to explore aseismatic measures
摘要綜述能對壩基、壩身與庫水綜合分析的簡單實用方法，合理的高拱壩抗震安全評價準則，混凝土材料強度的動力特性，壩址河谷地震動的輸入模型，抗震工程措施等高拱壩抗震研究中亟待解決的問題和難點。
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