-
A first concave part is formed on the top surface of the base plate.
该基板的该顶表面形成一第一凹陷部。
youdao
-
A second concave part is formed on the bottom surface of the base plate.
该基板的该底表面形成一第二凹陷部。
youdao
-
A second concave part is formed on the bottom surface of the base plate.
该基板的该底表面形成一第二凹陷部。
youdao