3 . food , temperature and predation pressure directly act on the value of venturous revenue and are major environmental factors affecting dvm of the copepod 食物、温度和捕食压力直接影响风险收益值的大小，是影响桡足类垂直迁移的主要环境因子。
2.
Venture capital that hi - tech company needs is a kind of high venturous and high profitable right investment . we have not yet set up a system of law to regulate venture capital investment field 同时，高科技企业所需要的资金? ?风险投资属于高风险、高收益的权益投资，国内尚未建立起一整套引导和规范风险投资运行的制度。
3.
A model is developed to analyze the tradeoff between benefits and costs involved in the strategies for the normal dvm of copepod . the venturous revenue is used as the criterion for this optimal tradeoff . it is a function of the environmental factors and the age of copepod 本文提出一个桡足类常规的昼夜垂直迁移模型，以分析桡足类在垂直迁移的决策过程中对利益和风险的权衡机制，风险收益被用来作为这种权衡机制的优化目标，它是环境因子和桡足类年龄的函数。
4.
During vertical migration , the copepod is assumed to instantaneously check the variations of the environmental parameters and can thereby make the optimal behavioral strategy to maximize the value of venturous revenue , i . e . , taking up as much food as possible at as less cost of mortality as possible 在垂直迁移的过程中，我们假设桡足类个体能够即时识别环境参数的变化从而采取最优的行为策略以获取风险收益的最大值，即以尽可能小的死亡代价获取尽可能多的食物。
5.
Age as one of the internal factors can affect the value of venturous revenue through acting on the checking results of the external factors ( e . g . , predation pressure ) , and thereby affect the optimal migrating strategies . therefore , the patterns for dvm vary with the change of the animal ' s age 作为内部状态因子的年龄，因对外部因子(如捕食压力)识别结果的影响而对风险收益值有较大的影响，从而影响桡足类垂直迁移的最佳策略，导致其迁移的形式随年龄的变化而变化，一般来说，年龄越大的动物垂直迁移的时间越早、幅度越大； 3
