UC知道翻译下·英文
来源：百度知道 编辑：UC知道 时间：2024/05/25 02:00:00
Bag · 双肩背包
Significance · 美国那次淘金潮，当时第一批踏上美国大陆的移民，他们可以说是一穷二白，他们不得不拼命的工作。强烈的劳动使得衣服极易磨损，也需要耐磨的包
Design Development · 以前背包均为H形状，背负系统仅依靠厚实肩带造成背包骨架易摇晃，遇到剧烈运动不易保护平衡，后发明的包有了肩带·胸带·和腰带·，结合背负者和背包并分散背负重量，多数外架背包有许多小侧袋提供置放物品
Analysis ·虽然有许多小侧袋提供置放物品，但坚实外架式的背包骨架载重的重心通常高於肩与腰，如此它的负重中心点造成背负者为保持平衡而向前倾，同时外架式背包的坚硬骨架会降低行进间的旋转空间且重心点较高造成行进过程难保持平衡。
Case Study ·西进运动
History ·西进运动·一·是以农业为主的初步开发时期。
二·以工业为主的综合开发时期。
三·以高新技术为主的深度开发时期
Background · 南部的奴隶主、北部的土地投机商和贫苦的老百姓，都希望在西部获得土地。移民使美国能够进行大规模的农业生产，能够以巨大的力量和规模开发其丰富的工业资源。美国政府的土地政策，横贯大陆铁路的建筑，加速了西部的开发。
PROFILE ·这场西进运动对美国的经济、政治和社会都产生了重大而深远的影响。西进运动彻底改变了美国的面貌，大片荒地被开垦出来，大批的资本主义农场建立起来，西部农业的发展为工业的发展提供了大量的粮食、原料、出口产品和国内市场西进运动激发了美国人的创造力和经济活力，提高了美国的综合国力和国际地位，对美国整个国民经济的起飞具有重要的意义。
Shoulders Bag backpack
Significance was American gold rush, when the first batch of immigrants set foot on the mainland United States, they can be said to be poor and white, they had to work hard. Strong workforce makes clothes easy to wear, but also wear-resistant package
Design Development backpack ago are H shape, the carrying of the system only depend on a solid frame backpack straps easily cause shaking, encountered intense exercise is not easy to protect the balance, after the invention of the package with shoulder strap belts and chest belt, combined with those who bear and backpacks and distributed to bear weight, the majority outside the frame backpacks have many small items侧袋provide placement
Analysis Although there are many small items placed侧袋provided, but a solid outer skeleton frame backpack load center of gravity is usually higher than the shoulders and waist, so its weight to bear those who caused the center to maintain a balanced