early swimming machine — a hopeful inventor propels himself through the water with paddle wheels strapped to his limbs - 推進力 幅插畫檔、美工圖案、卡通及圖標
gear, drive, gearwheel, red, defect, negative, business, spare part, analysis, pinion, ball bearing, 3d, malfunction, red, mechanics, wheel, tooth, metal, silver, steel, teamwork, commercial, teeth, component, top view, signal box, forces, power, backgrou - 推進力 幅插畫檔、美工圖案、卡通及圖標
a vibrant energy farm featuring multiple wind turbines surrounded by golden crops under a clear blue sky, representing a sustainable future - 推進力 幅插畫檔、美工圖案、卡通及圖標
hydropower plant on the nistru river in dubasari (dubossary), transnistria, moldova. hydro power station, water dam, renewable electric energy source, industrial concept. global environmental problems - 推進力 幅插畫檔、美工圖案、卡通及圖標
illustration of astronaut preparing for spacewalk, wearing spacesuit with american flag on sleeve, external oxygen tanks, and rocket propulsion pack, manoeuvering unit containing reserve oxygen tanks and battery behind man. - 推進力 幅插畫檔、美工圖案、卡通及圖標
three spacecraft pass by one of saturns moons on their journey through the solar system. - 推進力 幅插畫檔、美工圖案、卡通及圖標
a spacecraft flies near an ice planet and its rings near a deep space nebula cloud. - 推進力 幅插畫檔、美工圖案、卡通及圖標
brunton’s mechanical traveller of 1813 — early steam horse locomotive propelled along the rails by two mechanical walking legs - 推進力 幅插畫檔、美工圖案、卡通及圖標
a shuttle from an earth base makes its way with supplies to a space station in orbit over the planet. - 推進力 幅插畫檔、美工圖案、卡通及圖標
hedley’s eight-wheeled steam locomotive — early railway engine with four coupled axles designed to spread its weight across the track - 推進力 幅插畫檔、美工圖案、卡通及圖標
maritime history, de bay screw propeller, a highly unusual maritime propulsion design aimed at improving efficiency during the 19th-century rush to perfect screw propulsion, victorian, vintage illustration, 19th century - 推進力 幅插畫檔、美工圖案、卡通及圖標
concept of nasa's mars science laboratory aeroshell capsule as it enters the martian atmosphere. - 推進力 幅插畫檔、美工圖案、卡通及圖標太空囊
earth has a colony on this water planet which is one of the moons of the gas giant in the sky. - 推進力 幅插畫檔、美工圖案、卡通及圖標
launching new ideas and thoughts, education and learning to help gain knowledge of innovation, rockets fired from the books of businessmen sitting cross-legged - 推進力 幅插畫檔、美工圖案、卡通及圖標效率
william murdoch’s steam carriage model from 1784 — early self-propelled road vehicle with three wheels, horizontal beam, vertical boiler and exposed steam mechanism - 推進力 幅插畫檔、美工圖案、卡通及圖標
rear view of spaceship with afterburners engaged as it approaches planet earth. - 推進力 幅插畫檔、美工圖案、卡通及圖標
test of a giant ion cannon, which has been built as a defense agains huge ships. - 推進力 幅插畫檔、美工圖案、卡通及圖標
a small spacecraft from earth reaches a water planet after many light years. - 推進力 幅插畫檔、美工圖案、卡通及圖標太空船
entrepreneurship, starting or launching a new business, new idea, isometric index finger presses a button and the rocket in your brain starts to take off - 推進力 幅插畫檔、美工圖案、卡通及圖標速度, 按鈕, 火箭
flying machine inspired by the martians in h.g. well's, the war of the worlds novel. - 推進力 幅插畫檔、美工圖案、卡通及圖標
