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- rectangular cross ripple mark 直角交错波痕
- A hollow, metallic electromagnetic transmission antenna with a circular or rectangular cross section. (喇叭形)天线中空的,金属制成的电磁发射天线,具有圆形或矩形的覆盖网
- This paper recommend a kind of simple manual die to bend the thin-wall rectangular cross section steel tube well in forming process. 介绍了一种简单实用的手动弯曲模,可以较好地完成薄壁矩形截面钢管的弯曲成形工艺。
- Three kinds of flight cross sections were researched including rectangular cross section, hackle cross section and trapezoid cross section. 本文讨论的螺纹断面形状为三种:矩形断面、锯齿形断面,梯形断面。
- Nine models with different rectangular cross sections are tested in a wind tun nel to study the characteristics of the local wind force on high rise buildings . 对9种矩形截面的高层建筑物模型进行了风洞实验,观测了模型的层风力特征。
- "Rack and pinion: Mechanical device consisting of a Bar of rectangular cross section (the rack), having teeth on one side that mesh with teeth on a small gear (the pinion). 齿条和小齿轮:一种机械装置,由一条矩形截面的杆(齿条)和一个与齿条上的齿相啮合的小齿轮组成。
- The dark-gray traction current deposits belong to internal-tide deposits, it develops sandstones and siltsands, and charactered with lenticular, wave, flaser bedding, bimodal cross-bedding and ripple mark. 深水牵引流沉积为内潮汐沉积类型,岩性为细砂岩、粉砂岩,以发育透镜状、波状、脉状层理、双向交错层理、波痕等沉积构造为特征。
- Screws with rectangular cross section were studied on the performance of PC melt conveying with various arc radiuses, different screw retraction velocities and screw rotating speeds. 对于矩形断面螺杆,主要讨论了圆弧半径变化对PC熔体输送性能及流动状况的影响,并讨论了不同螺杆后退速度、螺杆转速对熔体输送性能的影响。
- Surface quality of billets shall be free from all harmful defects like surface cracks, seams, laps, folds,scabs blowholes,deep ripple marks, aluminum patches, slag patches etc. 钢坯表面要避免一些瑕疵譬如裂纹,接缝,重叠,折痕,抓痕,深的波纹,斑点等。
- pressure vessel with rectangular cross section 矩形截面压力容器
- deep beams ofthe rectangular cross section 矩形截面深梁
- The water scarcely reached my waist; the sand was firm and covered with ripple marks, and I waded ashore in great spirits, leaving the Hispaniola on her side, with her mainsail trailing wide upon the surface of the bay. 水刚到我的腰问,脚下的沙滩很坚实,上面留有一道道波纹。 我精神百倍地涉水上了岸,任凭西斯潘尼奥拉号侧身倒在那里,也任凭它的主帆漂在小湾的水面上。
- Six sedimentary structures, ice split seams, ice slid marks, ice collapsed seams, ice induced pellets, ice eroded ripple marks and ice level marks, are newly found in Yellow River delta. 在黄河三角洲新识别出 6种冰冻沉积构造 :冰劈裂缝、冰成滑痕、冰塌裂缝、冰成球粒、冰蚀波痕和冰位痕。
- Based on practical experience, the authors put forward effective prevention methods to decrease the defects in sanding process, such as sanding marks, ripple marks and creases on fabric. 针对常见真丝绸砂洗的疵病,如砂洗痕、水玻璃皱、布面皱痕等,作者提出了有效的防止措施。
- A pillar, rectangular in cross section, supporting an arch or roof. 支柱交叉处的长方形柱子,支撑一个拱顶或屋顶
- He vainly tried to mark the defacing stain out. 他试图除去有损外观的污迹,但没有成功。
- A ripple of laughter went through the audience. 观众中响起一阵轻轻的笑声。
- I put a rectangular box on the table. 我把一个长方形的盒子放在桌子上。
- It is rash to cross the street without looking both ways. 不朝两边看看就穿马路是莽撞的。
- Her school work isn't quite up to the mark. 她的功课不大符合要求。