似針石 的英文怎麼說
中文拼音 [sìzhēndàn]
似針石
英文
lithraphidites-
Abstract : in light of thicker grain and smaller viscosity of debris flow, a segmented simulation of the debris flow with flume is presented. for the first time. more difficult resistance similarity is brought about by geometric rate without excessive coarsing and discontinuous similarity of sand grain composition in model is eliminated with different grain scale. on this basis the density similarity and sand conveying similarity are achived. the method presented is verified through a model test case
文摘:針對水石流顆粒粗，粘性小的特點，提出了利用水槽進行分段模擬水石流的設想，首次通過幾何變率解決難度較大的阻力相似問題，改變了以往過度加糙的方式;通過變粒徑比尺的方法消除了模型沙級配不連續相似的問題，較好地實現了固體物質級配相似，達到了泥石流的密度相似和輸沙相似.通過水槽概化模型試驗實例，對本方法進行了驗證The cuff - link comes in so many guises ? understated gold ovals and diamond studs ; enamelled 1950s pin - ups and novelty taps ; compasses and road signs ? there may seem to be little room for radical re - invention
袖扣款式多種多樣? ?樸素的黃金橢圓形袖扣和鉆石袖扣；上世紀50年代帶有攝影模特照片的琺瑯袖扣和新奇的水龍頭袖扣；指南針和路標? ?在這一領域，似乎不存在進行徹底再創造的空間了。
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