open graded 中文意思是什麼
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Ogfc standard practice for open - graded friction course mix design
開式級摩擦層 -
Open graded friction course ogfc
開放級配摩擦層 -
Standard guide for materials and construction of open - graded friction course plant mixtures
開式級摩擦層廠拌混合料的材料和鋪設的標準指南 -
An instrument consisting of an upright, open triangular frame with usually46 strings of graded lengths played by plucking with the fingers
豎琴一種有一個通常系有四十六根長短不一的琴弦的直立的開放三角架、彈奏時用手指撥動琴弦的樂器 -
Open graded friction courses ( ogfc ) is a kind of open graded porous asphalt mix designed to drain water on the road face when raining. it has good performance on draining, anti - slide and noise reducing. it is common used in foreign countries from 1980s, while the lack in china because its poor mechanics performance, due to the high pore rate, cannot fit for the heavy traffic load in china
開級配瀝青磨耗層（ ogfc ）是一種具有相互連通空隙的開級配混合料，具有優良的排水、防滑、降噪等功能，然而該種混合料空隙率達15以上，瀝青用量低，混合料的耐久性和強度會產生一定影響，由於我國高速公路重載、超載嚴重，按國外設計方法設計的ogfc混合料難以滿足路用性能的要求，因此， ogfc在我國高等級公路建設中一直沒有得到推行。 -
Finally, in to order to verify the validity of optimal design the open voltages and power outputs of graded bi2te3 / cosb3 thermoelectric materials in the temperature difference ranging from 300k to 800k were investigated. the research results show that : as for monolithic materials, bi2te3 alloys process higher figure - of - merit in the temperature ranging from room temperature to 450k, then it begins to worsen with temperature increasing
通過對結構梯度bizte3 / cosb3熱電材料開路電壓與熱端溫度的關系及梯度熱電材料在300k至800k的溫度范圍使用時的功率輸出研究結果表明:在均質材料cosb3和bizte3的長度比為巧: 2時，梯度結構bizte3 / c 。 -
The open voltages and power outputs of graded materials are much higher than monolithic materials, and when the length was kept at 15 : 2, the maximum values were achieved. the measured maximum power outputs of graded materials is about 320 wm " 2 when the loaded is fixed at 0. 1, which is about 1. 8 times than that of cosbj compounds ( 178wm " 2 )
Sb :熱電材料具有最大的開路電壓輸出和功率輸出;梯度熱電材料bizte3 / cosb3在外界負載為0 . iq時的功率輸出約為32owm 「 ，約為均質材料cosb3功率輸出178wm一2的1 -
Open - graded aggregate
開級配粒料 -
Has now been completed with well equipped conditions so called clear and open in seven aspects with graded site, namely, supply of water electricity, natural gas, heat, separate drainage systems for waste water and rainfall, and reasonably leveled site
北京經濟技術開發區籌建於1991年8月15日，是國務院批準的國家級開發區。一期開發面積15平方公里，現已完成了開發區3 . 256平方公里的基礎設施建設，實現了「七通一平」 。
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