...脉动压力下舰船及其设备抗冲击性能研究 Terminology for ship technology 船舶工艺术语 Ship-Building Technology 船体建造工艺 ; 舟体建造工艺 ..
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During the 18th and 19th centuries, improvements in ship-building technology and the repeal of protectionist trade laws made it easier and easier for people to ship goods over great distances.
FORBES: Density Limits Are Urban Protectionism
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