སྒྱུ་རྩལ

མཛེས་སྡུག་དང་བདེ་ཐང

བཟོ་རིག

རིག་གནས་དང་ལོ་རྒྱུས

དགའ་སྟོན

ཁོར་ཡུག

ཟས་དང་བཏུང་རྫས

ཕྱིར་འཕྲུལ་རིག

ཚན་རིག

རྩེད་འགྲན

རིག་རྩལ

གྱོན་རུང

བིལུ་པིརིན་ཊི Sciencesའཕྲུལ་རིག

འཕྲུལ་རིག

བིལུ་པིརིན་ཊི ༡༧ ཡོད

བིལུ་པིརིན་ཊི (༡༧)

Arch Centring and Falsework

Arch Centring and Falsework

Emma གྱིས

ཤིང་སྒྲོམ

Blind Rivet

Blind Rivet

Emma གྱིས

འཕྲུལ་རིག

Metal Electrode Arc Welding

Metal Electrode Arc Welding

Forge གྱིས

ལྕགས་བཟོ

Centerless Grinding

Centerless Grinding

Emma གྱིས

ཕབ་བཟོ

Building Leonardo da Vinci's Armored Car — The Ancestor of the Tank

Building Leonardo da Vinci's Armored Car — The Ancestor of the Tank

Emma གྱིས

Renaissance (1400–1600)

Building Leonardo da Vinci's Ornithopter — The Flapping-Wing Flying Machine

Building Leonardo da Vinci's Ornithopter — The Flapping-Wing Flying Machine

Emma གྱིས

Renaissance (1400–1600)

Building Leonardo da Vinci's Revolving Bridge — The Swing Bridge for a Marching Army

Building Leonardo da Vinci's Revolving Bridge — The Swing Bridge for a Marching Army

Emma གྱིས

Renaissance (1400–1600)

Building Leonardo da Vinci's Self-Propelled Cart — The First Programmable Robot

Building Leonardo da Vinci's Self-Propelled Cart — The First Programmable Robot

Emma གྱིས

Renaissance (1400–1600)

Building Leonardo da Vinci's Aerial Screw — The Ancestor of the Helicopter

Building Leonardo da Vinci's Aerial Screw — The Ancestor of the Helicopter

Emma གྱིས

Renaissance (1400–1600)

Building Leonardo da Vinci's Parachute — The Sealed Linen Pyramid of 1485

Building Leonardo da Vinci's Parachute — The Sealed Linen Pyramid of 1485

Emma གྱིས

Renaissance (1400–1600)

Casting Reinforced Concrete — Marrying Steel and Stone into the Modern Structure

Casting Reinforced Concrete — Marrying Steel and Stone into the Modern Structure

Balin གྱིས

དེང་རབས

Building a Safety Bicycle — Chain Drive, Equal Wheels, and Personal Freedom

Building a Safety Bicycle — Chain Drive, Equal Wheels, and Personal Freedom

Palpatine གྱིས

དེང་རབས

Building a Screw-Cutting Lathe — The Machine That Makes Other Machines

Building a Screw-Cutting Lathe — The Machine That Makes Other Machines

Gimli གྱིས

དེང་རབས

Building a Macadam Road — Cheap, Dry Highways from Small Broken Stone

Building a Macadam Road — Cheap, Dry Highways from Small Broken Stone

Arwen གྱིས

དེང་རབས

Building a Davy Safety Lamp — A Flame That Cannot Light the Firedamp

Building a Davy Safety Lamp — A Flame That Cannot Light the Firedamp

Thranduil གྱིས

དེང་རབས

Building a Newcomen Atmospheric Engine — The First Engine to Do Real Work

Building a Newcomen Atmospheric Engine — The First Engine to Do Real Work

Dwalin གྱིས

དེང་རབས

Making Float Glass — Pilkington's Molten Tin Process That Windows Every Building on Earth

Making Float Glass — Pilkington's Molten Tin Process That Windows Every Building on Earth

Charlie གྱིས

དེང་རབས