External defects: undercut,overip,arc pit, gas cavity in surface,crack in surface.
外部缺陷：咬边、焊瘤、弧坑、表面气孔、表面裂纹。
A COMPARATIVE OBSERVATION ON THE LEAF STOMATAL MORPHOLOGY OF AGLAlEAE (MELIACEAE)
米仔兰族植物叶表面气孔形态的比较观察
Surface pinholes caused by gas formed at the mould surface.
因钢锭模表面生成气体而形成的表面针孔。
Gas liquid mass transfer specific area in microporous membrane gas distributor
微孔膜气体分布器气液传质比表面积的研究
Influence of Adding Re-melting on Porosities of Spray-welding Coating on Titanium Alloys Surface and Cause of Porosities
钛合金表面火焰喷焊涂层中气孔的成因及增加重熔对气孔的影响
Chemical Modification and Characterization of Nanoporous Super Thermal Insulation Material--Silica Aerogel
纳米孔隔热材料——SiO_2气凝胶的表面改性及其表征
The act or process of transpiring, especially through the stomata of plant tissue or the pores of the skin.
出汗蒸发的行为或过程，尤指通过植物表面的气孔或皮肤孔蒸发
a substance for packing a joint or coating a porous surface to make it impervious to gas or liquid.
用于包裹接缝或多孔表面以防漏气漏水的物质。
Any severe deficiency of welding seams surface like cracks, pores, slags is forbidden.
焊缝表面不得有裂纹,气孔,夹渣等严重缺陷.
Study on the technology of laser honing applied in machining the cylinder bore of engine
发动机气缸孔表面的激光珩磨技术研究
Experimental investigation on film cooling effectiveness of multi-hole at longitudinal wavy surface
多孔纵向波纹表面气膜冷却效率实验研究
To lap better, all porous holes.
上面净是气孔，便于舔食。
Always use an appropriate area, such as heat-resistant surface, keep away form drafts, vents and air currents.
要在恰当的地方如防热的表面使用，要远离纸张，孔和流通的空气。
The girls' faces, flushed by the hot, steamy atmosphere, were as expressionless as the faces of statues.
被热气蒸红了的女工们的面孔，石像似的没有任何表情。
The Aerodynamic Noise Reduction by Using Porous Materials and Application to a Pantograph
构件表面粘贴多孔材料降低空气动力噪声及其在受电弓上的应用
Experimental research on film cooling characteristics of cylindrical hole with transient liquid crystal measurement technique
基于瞬态液晶全表面测量技术的圆柱形孔气膜冷却特性研究
Experimental Study on Degassing Method for Surface Area and Pore Size Distribution Determining of Coal with Isothermal Nitrogen Adsorption
煤粉比表面积与孔径分布测定中脱气方法的实验
taken in through the pores of a surface.
通过表面的孔被吸入。