Inspection installation and watertightness transducer of echo sounder on berth.
测深仪换能器船台安装和水密性检查。
2
Gas tightness and watertightness ensure Goldcommon door and window system to produce healthy and comfortable living conditions.
柯曼门窗系统创造健康、舒适的居住环境，离不开优良的气密性和水密性。
3
Tests to be carried out after completion of all works affecting the watertightness and before fitting the floor covering, the insulation, the lining etc.