1) alcove
[英]['ælkəʊv] [美]['ælkov]
泉蚀凹壁
2) spring esapping
泉蚀
3) etchback
凹蚀
1.
According to the current application, there are three major aspects of the Plasma application in the PCB industry,including cleaning,activation and etchback.
就目前来看,等离子体在PCB行业中的应用主要有三种:清洁、活化和凹蚀。
4) pits on the outer surface
外壁凹坑
5) integument pits
体壁凹陷
6) Osmia excavata Alfken
凹唇壁蜂
1.
The resistance and reproductive potential of Osmia excavata Alfken.;
凹唇壁蜂的耐寒性及生殖潜力研究
2.
Plant species visited by Osmia excavata Alfken show concentration in the family of Rosaceae,including apple,pear,peach,cherry,plum and apricot.
凹唇壁蜂雌蜂用腹毛刷采集携带花粉 ,访花植物种类主要为苹果、梨、桃、杏、李、樱桃等北方常见落叶果树 ,也采访早春开花的十字花科及少数杂草。
补充资料:凹模壁厚及凹模垫板尺寸
型腔壁部投影面积 壁 厚, 毫 米
F, 厘米2 h1 h2 h3 h4 h5
<5 15~20 30~40 <=10 15~20 30~40
>5~10 20~25 40~50 10~15 20~25 40~55
>10~50 20~30 50~60 15~20 20~30 55~65
>50~100 30~35 60~75 20~25 30~40 65~70
>100~200 35~40 75~85 25~30 40~50 70~75
>200 >40 >85 30~35 50~60 >80
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条