1.
hard facing of tool joint
钻杆接头表面加硬层
2.
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。
3.
form a crust or a hard layer.
形成一个硬壳或坚硬的层。
4.
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
5.
low pressure synthesis of superhard coating
超硬涂层的低压合成
6.
hard plastic clad silica optical fiber
硬塑料包层石英光纤
7.
step index hard-clad silica fiber
突变型硬包层石英光纤
8.
a hard glossy coating.
一种坚硬光滑的涂层。
9.
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
10.
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
11.
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
12.
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。
13.
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
14.
A harsh double coat is absolutely necessary.
粗硬而浓密的双层毛是绝对必需的。
15.
incrustations of barnacles on the hull
藤壶附在船身上形成坚硬的外层.
16.
Crust over
使在表面上形成一层硬壳：
17.
super water proof multi-coated lens
超级防水加硬多涂层光学镜片
18.
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。