风。 2 Technology-.driven increases in productivity:Drive:推动，由技术进步推动 的生产力的提高。 3.The tech investment cycle:技术投资周期 4.initial public offering:第一次公开上市、原始股上市 5.percentage point::百分点，注意两个百分点和百分之二的区别。 6.new sources of volatility:这些新的不稳定因素 7.capital spending binge:投资热 8.serviceable life:服务年限、使用寿命 9.sizzle:欣欣向荣 l0.reading:interpretation解读 ll.critical mass,.临界物质/质量in nuclear physics,.the minimum amount of a given fissile material necessary to achieve a self-sustaining fission chain reaction under stated conditions.Its size depends on several factors,including the kind of fissile material used,its concentration and purity,and the composition and geometry of the surrounding reaction system. 1)The smallest mass of a fissionable material that will sustain a nuclear chain reaction at a constant level. 2)The amount of matter needed to generate sufficient gravitational force to halt the current expansion of the universe. 3)An amount or level needed for a specific result or new action to occur: "The sudden national uproar over drugs and drug abuse has reached politically critical mass in Washington"(Tom Morganthau). 核燃料达到临界质量，就能维持核连锁反应。这儿用来比喻高科技投资积 累达到一定数量，就能自我维持持续性增长。 l2.Froth:Notice the difference between bubble and froth.作者不同意有泡沫， 只承认有微沫。 l3.Capital deepening:资本深化c.f.capital widening资本广化风。 2. Technology-driven increases in productivity: Drive：推动，由技术进步推动 的生产力的提高。 3. The tech investment cycle: 技术投资周期 4. initial public offering: 第一次公开上市、原始股上市 5. percentage point: 百分点，注意两个百分点和百分之二的区别。 6. new sources of volatility: 这些新的不稳定因素 7. capital spending binge: 投资热 8. serviceable life: 服务年限、使用寿命 9. sizzle：欣欣向荣 10. reading: interpretation 解读 11. critical mass, 临界物质/质量 in nuclear physics, the minimum amount of a given fissile material necessary to achieve a self-sustaining fission chain reaction under stated conditions. Its size depends on several factors, including the kind of fissile material used, its concentration and purity, and the composition and geometry of the surrounding reaction system. 1）The smallest mass of a fissionable material that will sustain a nuclear chain reaction at a constant level. 2）The amount of matter needed to generate sufficient gravitational force to halt the current expansion of the universe. 3）An amount or level needed for a specific result or new action to occur: “The sudden national uproar over drugs and drug abuse has reached politically critical mass in Washington” (Tom Morganthau). 核燃料达到临界质量，就能维持核连锁反应。这儿用来比喻高科技投资积 累达到一定数量，就能自我维持持续性增长。 12. Froth: Notice the difference between bubble and froth. 作者不同意有泡沫， 只承认有微沫。 13. Capital deepening: 资本深化 c.f. capital widening 资本广化