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VARIABLE-THICKNESS SEAL HEAD AND DESIGN METHOD THEREOF
STIFFENED CORRUGATED EGG-SHAPED PRESSURE HULL AND MACHINING METHOD THEREFOR
PYRAM-SHAPED DEEP-SEA PRESSURE-RESISTANT SHELL AND DESIGN METHOD THEREFOR
PYRAM-SHAPED DEEP-SEA PRESSURE-RESISTANT SHELL AND DESIGN METHOD THEREOF
Tower-spiral-shaped deep-sea pressure-resistant shell and design method thereof
DEVICE FOR BUOYANCY ADJUSTMENTS UNDER MULTIPLE WORKING CONDITIONS, AND ADJUSTMENT METHOD
Marine propeller protection device and working method thereof
Pull-type full-revolving propeller and control system and method thereof
Pull-type ship propeller and control system and method thereof