1.
internal undercut
焊道底边或内表面咬肉
2.
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。
3.
3. Apply flux to outside of tube and inside of solder cup. Surfaces to be joined must be completely covered. Use flux sparingly.
3. 在管道的外面和焊接罩的内部涂上焊剂,焊剂必须完全覆盖焊接表面。请有节制地使用焊剂。
4.
apply flux to outside of tube and inside of solder cup. Surfaces to be joined must be completely covered. Use flux sparingly.
在管道的外面和焊接罩的内部涂上焊剂,焊剂必须完全覆盖焊接表面。请有节制地使用焊剂。
5.
The Preliminary Analysis for Droplet Transfer and Weld-bead Undercutting in GMAW;
GMAW熔滴过渡及焊道咬边成形缺陷的初步分析
6.
Portable: Top, sides, bottom and back of computer in view when closed. All textured surfaces not covered by Class I examples above.
便携式:计算机关上后所看到的上面,两边,底部和后部.即所有一级区域未提及之咬花表面.
7.
Research on the Mechanism of Undercut Formation and High Speed Welding Technology
焊缝咬边形成机理及高速焊工艺研究
8.
The backing plate shall be welded with matching electrodes so that the weld on the clad side is flush with the backing plate surface.
底板用配套焊条焊接，使复层侧的焊缝与背衬板表面齐平。
9.
Drawer bodies will have bottom and sides formed into one piece center section. Front and back panels are spot-welded to center section.
抽屉底部和两边为单片设计。前、板面为点焊。
10.
Either of the folded ends of a book jacket that fit inside the front and back covers.
向内折的边书籍护套折进封面或封底的折叠端的任一端
11.
the bottom surface of any a cave or lake etc..
洞或湖等的底部的表面。
12.
the abaxial surface of a leaf is the underside or side facing away from the stem.
叶子的远轴表面就是背离叶梗底部或旁边的部位。
13.
A preliminary coat of paint or size applied to a surface.
涂底料，底漆涂在某一表面上的底漆或底料
14.
Indicates back or backing. Use in conjunction with a groove symbol.
指示底焊或封底焊。与沟符号一起使用。
15.
They judge the side lines and the base lines.
他们判断边线和底线球（界内或蜀外）。
16.
the outside boundary or surface of something.
某物的外部边界或表面。
17.
The part or side below or under.
下部,底部下面的部分或边缘
18.
Treated surface should be free of fash, burr, welding scar or dirty.
经处理的摩擦面，不得有飞边、毛刺、焊疤或污损等。