The invention relates to a keelless anti-expansion solidfloor board.
本发明涉及一种无龙骨抗伸缩式实木地板。
2
The perspective is a bit odd, and I probably should have drawn in a solidfloor line.
透视看起来有点怪﹐而且我大概应该把地板和墙之间的分线划清楚。
3
Double concentric cylindrical shell with solidfloor and added longitudinals on the pressure tank shell is a very good structural form of new pressure tank.