High pressure sodium (HPS) lamps driven by traditional electromagnetic ballast usually suffer from high current stress on lamp's electrodes during start up stage.

高压钠灯配接传统电感镇流器启动时灯电流对阴极冲击过大，缩短了高压钠灯的实际使用寿命。

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The Valleys professionals are among the most hardworking people anywhere. A 15-hour day and 7-day week is not uncommon, especially during the start-up stage.

硅谷中专业人士工作之勤奋努力，举世罕见：每周七日、每日15小时工作司空见惯，尤其是在创业初期。

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Based on the analysis above, combined with the characteristics of high-tech enterprise life cycle, partitioning the growth into three: start-up stage, growing and maturing stages.

在以上分析的基础上，结合高新技术企业生命周期的特点，把其成长过程划分为创业期、成长期和成熟期三个阶段。

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Then you get successively deeper, II through IV, slow, irregular, high amplitude delta waves, and then once you reach stage IV you start going up again, up through stage III and II.

然后睡得越来越深，从第二到第四阶段，慢，不规则，高振幅的δ波，等你到达第四阶段，你又开始返回，第三阶段和第二阶段。

耶鲁公开课 - 心理学导论课程节选

Venture for America is a two-year fellowship program for recent college graduates to work in a start-up or early stage company in a low-cost city.

WHITEHOUSE: Venture for America �C Building Businesses

Thiel puts his money where his mouth is, funding not only early-stage start-up companies but long-shot research into sci-fi inventions.

FORBES: Tyler Cowen's Techno Slump

YCombinator founder Paul Graham has stated that a healthy early-stage start-up should be growing roughly 7% week-over-week across its key metrics.

FORBES: 3 Metrics That Really Matter for Your Startup