求翻译：对风险投资项目估价时，通常我们对项目价值的历史信息不足，此时运用Black-Scholes期权定价模型进行分析就很难对它的波动性参数进行估计。是什么意思？

Valuation of Venture Capital, usually we project the value of historical information, this time using black-scholes option pricing model to analyze it is difficult to its volatility parameter estimate.

The Venture Capital Project valuation, the value of the projects we are usually the historical information is not sufficient, in this case use Scholes Black - option pricing model for analysis it is difficult to the volatility of its parameters are estimated.

When to venture capital project estimate, usually we are insufficient to the project value historical information, this time carries on the analysis using the Black-Scholes option fixed price model on very difficultly to carry on the estimate to its undulatory property parameter.

On the valuation of venture capital project, usually out of our historical information of value to the project, in which case analysis using Black-Scholes option pricing model is difficult to estimate its volatility parameters.

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