1) lunette
[英][lu:'net] [美][lu'nɛt]
月牙形低丘
2) bunoselenodont
丘月牙型
3) erescentic dune
新月形丘
4) semi-crescent shape
半月牙形
5) crescent shape
月牙形
1.
The change from arc shape to crescent shape at the bottom of cross section of dissimilar metal K418 and 42CrMo is observed with the proportion of laser irradiation on K418 to 42CrMo altered from 1/3 to 2/3, which is due to difference of theirs physical and chemical properties.
由于K418和42CrMo热物性参数的差异,K418与42CrMo异种金属激光焊接随激光覆盖K418侧的光斑面积比例从1/3增加到2/3,大钉头小钉身的焊缝横截面尾部从圆弧形逐步过渡到月牙形。
6) barchan dune
新月形沙丘
1.
Field measurement of surface wind velocity and sediment transport rates was made on barchan dune in Wulanbuhe desert to understand.
对乌兰布和沙漠新月形沙丘表面风速的野外观测结果表明,沙丘迎风坡气流加速量主要和沙丘坡面形态、迎风坡前来流风速有关,迎风坡风速放大率介于1。
2.
Field observation and theoretical analysis of wind velocity on windward slope of a isolated barchan dune indicated that velocity profile is non logarithmic; shear velocity and sand transport increase from foot of slope to the top as a whole though change correspondently with increase or decrease of the slope gradient.
对孤立新月形沙丘迎风坡风速的野外实测和计算表明，沙丘迎风坡表面风速廓线呈非对数关系，近地面剪切风速和输沙强度由坡脚至丘顶总体呈递增趋势，但同时随断面坡度的增减而发生相应的变化；沿断面输沙率的变化导致蚀积强度的改变，表现为沙丘迎风坡坡度变缓的部位沉积大于侵蚀，其它部位侵蚀大于沉积，其中丘顶输沙率和侵蚀强度最大。
补充资料：初除拾遗酬丘二十二见寄（一作初拜命酬丘丹
【诗文】：
江海久垂纶，朝衣忽挂身。丹墀初谒帝，白发免羞人。
才愧文章士，名当谏诤臣。空馀荐贤分，不敢负交亲。
【注释】：
【出处】：
全唐诗：卷294_8
江海久垂纶，朝衣忽挂身。丹墀初谒帝，白发免羞人。
才愧文章士，名当谏诤臣。空馀荐贤分，不敢负交亲。
【注释】：
【出处】：
全唐诗：卷294_8
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条