draft guage [= draft indicator]
Airborne Survey and Remote Survey Center of Nuclear Industry
contingent survey [= extraordinary survey
Cross-section Survey and Profiles Survey
survey of existing line;survey of existing railway
topical survey subject survey
adjust the ship’s draft
adjustment of the ship’s draft
aerating test to draft tube
air draft
气流
吸风
通风
抽风
净空高度
空气通风
水上高度
净空高度水上高度
水线到舱口围顶的距离