Telegraph lines presented a similar economic challenge-high start-up capital and low marginal operating costs.
电报线路提供了类似的经济挑战——很高的启动资本和很低的边际运营成本。
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Whenever users and servers are connected to the Internet over low-speed connections or on high-traffic routes, HTTP compression can keep the lines of effective communication open.
Quail lines selected for high and low stress in Department of Poultry Science, LSU, USA were fingerprinted by RAPD analysis of genomic DNA to evaluate genetic polymorphism.