It was found that the relative hard strata not only formed horizontally but also vertically;and the vertical stratum has a relationship to the hydrodynamics.
研究发现:沿海床剖面不仅存在水平硬层,同时也存在竖直硬层,且竖直硬层与水动力条件有关。
This paper studied a method to use plasma as heat source for surface quenching of 45 steel, the optimal parameters are obtained through the tests, and the process parameters affecting hardened layer hardness、depth and width were analyzed.
利用等离子体作为热源对45号钢进行表面淬火,通过试验获得了等离子体表面淬火热处理的最佳工艺参数,并简要分析了各种工艺参数对淬硬层硬度、深度、淬硬带宽度的影响规律。
This paper studied a method to use plasma as heat source for surface quenching of 45 steel,the optimal parameters are obtained through the tests,and the process parameters affecting hardened layer hardness、depth were analyzed.
利用等离子体作为热源对45钢进行表面淬火,通过试验获得等离子体表面淬火热处理的最佳工艺参数,并分析各种工艺参数对淬硬层硬度、深度的影响规律,从而确定45钢等离子弧表面淬火的工艺参数。
Constructions controlling the cracking on waterproofing concrete roof and hardened layer;
防水混凝土屋面及硬化层施工裂缝控制
The results show that when the thickness of hardened layer is 0.
为了确定钛合金表面扩散焊接轴承钢硬化层的合适厚度,利用先进的纳米显微力学探针测量了材料的弹性模量。
Being a kind of integrated structural parts,different thickness of Ni hardened layer has great effect on distribution of internal stress and dimensional stability.
作为一种整体结构件,在实际应用中镍硬化层的厚度对部件的内应力分布以及尺寸稳定性有着重要的影响。
The microstructure and property of remelting hardening layer at different paramenters was analyzed by scanning electron microscope and microhardeness sclerometer and abrasion test-machine and salt-mist test-machine.
利用扫描电镜、显微硬度计、磨损试验机和盐雾试验机研究了不同工艺下熔凝硬化层显微组织及性能。
The relation between the processing parameters and the size of hardening layer the micro-hardness is investigated.
研究了40Cr钢表面激光淬火工艺参数与硬化层尺寸以及显微硬度的关系,分析了激光硬化层的显微组织。
The Al concentration distribution in aluminized layer,microstructure and some properties of surface hardening layer were studied.
研究了渗层的铝浓度分布，硬化层的显微特性及有关性能。
Development for hard coatings by physical vapour deposition technology;
物理气相沉积硬质涂层技术进展
A two-step penetration method for the correct measurement of the mechanical properties of hard coatings;
硬质涂层力学性能可靠测量的两步压入法
Recent progress and the applications of hard coatings such as TiN,CrN and TiAlN et al.
介绍了离子镀薄膜技术的发展,传统硬质涂层如TiN、CrN、TiAlN在工具、模具等方面的应用,新型硬质涂层材料如纳米多层涂层、纳米晶复合涂层以及DLC涂层材料的发展和应用,分析了复合镀膜技术的发展状况和应用前景。
In this paper analyze a great deal of practice datum,know hard stratum has important effect in rock moving application statistic method.
在整理和分析大量实测资料的基础上,应用数理统计的方法对覆岩中硬岩层对岩移参数的影响进行了研究,找出了岩层移动参数的影响因素与统计规律,对开采沉陷的进一步研究具有重要的意义。
hard facing of tool joint
钻杆接头表面加硬层
Litter in the hen coop beds down if it is not raked.
鸡笼里的稻草如不清除会形成硬层。
form a crust or a hard layer.
形成一个硬壳或坚硬的层。
Microstructure and Superhardness Effect of the Hard Nano-multilayer Films;
硬质纳米多层膜的微结构与超硬效应
low pressure synthesis of superhard coating
超硬涂层的低压合成
hard plastic clad silica optical fiber
硬塑料包层石英光纤
step index hard-clad silica fiber
突变型硬包层石英光纤
a hard glossy coating.
一种坚硬光滑的涂层。
Researching for the micro-hardness and white-layer in the workpiece surface layer in high speed and hard cutting
高速硬态切削工件表层显微硬度与白层研究
Research on Tunneling Technology in Hard and Mix Ground by Shield Machine;
盾构在硬岩及软硬不均地层施工技术研究
Study on High Speed Cutting Hardened Steel with the Coated Insert (CN35);
硬质合金涂层刀具（CN35）高速车削淬硬钢的研究
Stage V: Lesion is covered by a tough membranous layer that may be rigidly adherent to the ulcer base.
五期：损伤被一硬膜层覆盖，该硬膜层可能牢固地附着于溃疡基。
Research on the Deformation Rule of Surface Movement Caused by Mining under the Conditions of Thick Alluvium and Hard Solid Rock;
厚松散层厚硬岩层开采地表移动变形规律研究
A harsh double coat is absolutely necessary.
粗硬而浓密的双层毛是绝对必需的。
incrustations of barnacles on the hull
藤壶附在船身上形成坚硬的外层.
Crust over
使在表面上形成一层硬壳：
super water proof multi-coated lens
超级防水加硬多涂层光学镜片
A crust appears to have formed over the volcanic rubble.
火山熔岩表面似乎形成了一层硬壳。