Continuity and systemic characteristics, and personal and familylifecycle closely.
具有连续性和系统性的特点，与个人和家庭的生命周期紧密联系。
2
The farm households' activities are the micro-foundation of agricultural economy, and the familylifecycle is an important factor influencing farm households' activities.
农户行为是农业经济的微观基础，而家庭生命周期是影响农户行为的重要因素。
3
This research carries on the numerical analysis to the residential energy consumption and cost during lifecycle, based on the occupants life style and family structure change.