搜尋結果
A lever is a type of simple machine, which creates a mechanical advantage to perform tasks by changing the magnitude and/or direction of forces. A lever needs a fulcrum (see figure 1), which is the central pivot for the system to manipulate forces. A lever also needs some sort of rigid bar or rod placed in some position on the fulcrum to be ...
"lever" 相關課程教材 As the blind-folded participants manipulated a lever in front of them, a robotic hand touched their back. 瀏覽教材 Menzies’ partner, Zander van Manen, tilts the mirrors with a lever, until they are bouncing sunlight off another slab of mirrors, up ...
fulcrum. lever, simple machine used to amplify physical force. All early people used the lever in some form, for moving heavy stones or as digging sticks for land cultivation. The principle of the lever was used in the swape, or shaduf, a long lever pivoted near one end with a platform or water container hanging from the short arm and ...
LEVER翻译：棍棒／手柄, 槓杆，操縱杆，控制手柄, 優勢, （用以說服別人的）手段，把柄。了解更多。 示例中的观点不代表剑桥词典编辑、剑桥大学出版社和其许可证颁发者的 ...
Lever is rated a top HR software, leader in mid-market, and a highest satisfaction product. Hire better. Hire faster. Lever removes the complexities that make hiring a challenge. Top-rated ATS, LeverTRM™ helps organizations of all sizes with efficient and personalized recruiting and hiring. From early-stage startups to established global ...
槓桿平衡的條件（文字表達式）：. 動力×動力臂=阻力×阻力臂. 公式：. F1×L1=F2×L2一根硬棒能成為槓桿，不僅要有力的作用，而且必須能繞某固定點轉動，缺少任何一個條件，硬棒就不能成為槓桿，例如酒瓶起子在沒有使用時，就不能稱為槓桿。. 動力和阻力是 ...
