麻坑

海底面的特征：海底麻坑、大型塌陷坑；

Features of the seabed : seabed pockmark and giant sunken pit ;

这些流体活动和油气运移在海底以及盆地的浅层和深层显示不同地球物理特征，如气苗、麻坑、气烟囱和流体底辟带等。

These fluids flowing from deep overpressured strata to seafloor have been identified using different geophysical data , which are imaged as gas blow-out , pockmark , chimney , fluid diapir , and so on .

用V法铸造生产普通碳钢铸件易产生氧化缺陷，表现在铸件上表面有麻坑和缺损等。

The holes and defects appear at the top surface of castings during the common plain carbon steel is produced by V-process .

TA7合金环件低倍试样麻坑现象分析

Analysis of Pockmarks in Ring Forgings Macrostructure of TA 7 Alloy

发动机排气门锥面局部出现麻坑的原因

Pitting Analysis of the Local Exhaust Valve Seat of Engine

石英砂有密集的翻卷片、蛇曲脊、圆麻坑，这些结构反映了风成特征。

These ones are characteristics of aeolian origin .

相干光在嵌有随机粉粒和麻坑表面上透射主光场的实验及应用

The Main Transmission Light Wave field of the Coherent Light from surfaces with Small Craters and Particles Experiment and Apply

试验已经充分证明：气阀上采用一种表面处理方法所得到的涂层可以有效地减少并推迟“麻坑”的产生，数倍地提高了使用寿命。

Experiments show that a surface treatment process forming a protective coating prevents the pit-formation and extends the service lives in se veral folds .

无论汽油机或柴油机气阀，都是在燃气腐蚀与疲劳应力的联合作用下过早地产生所谓麻坑而损坏。

Exhaust valves of both gasoline and Diesel engine are damaged by combine gas corrosion and fatigue stress , which caused the formation of pits .

精研板沟槽表面的麻坑则属于表面疲劳磨损。

Peeling of the ball surface belongs to wear of abrasive , pitting of the groove surface of lapping disk is due to fatigue wear .

钢球表面金属的微细脱落是属于磨料磨损，板沟表面的麻点或麻坑则属于表面疲劳磨损（破坏）。

The separation of steel debares from the ball surface is abrasive wear ; the pitting of the surface of the plate groove is fatigue wear .

研究区内的巨型麻坑是流体逸散和底流活动共同作用下形成的；（3）在研究区首次发现一种新型的沉积物变形。

The genesis of mega-pockmarks in the study area is caused by strong fluid-flow escape and bottom current together ; ( 3 ) first documented a new type of soft sediment deformation .

运用光学显微镜和电子显微镜的实验手段，研究了某火箭发动机涡轮泵零组件表面麻坑的各种动态特征和非金属零件局部缺损及变形的特点。

The dynamic properties of surface pitting of the turbine pump metal parts of certain rocket engine and the properties of local damage and deformation of the nonmetal parts of the pump were investigated by means of optical microscope and electron microscope .

海底天然气渗漏不仅影响海底沉积物的物理性质，而且还极大地改变海底地形地貌，它能在海底形成麻坑、泥火山、冷泉碳酸盐岩以及化学自养生物群落等现象。

Marine gas seepage not only influences the physical properties of the seafloor sediments , but also significantly alters the geomorphology of the seafloor , such as the occurrence of pockmarks , mud volcanoes , authigenic carbonate and cold seep communities on seafloor .