1·Dry matter accumulation showed a s curve at a slow-fast-slow rate.
干物质积累呈“S”型曲线，符合“慢-快-慢”的增长规律。
2·Aiming at the problem of tangency point reorganization of digital curve, this paper proposes a digital curve tangency point detection technology based on rotate-angle accumulation.
针对数字曲线的切点识别问题，提出一种基于转角累加的数字曲线切点检测技术。
3·Under operation of the temperature curve, the gradual temperature decrease leads to stress accumulation, so it results in the stress peak likes a wave and becomes higher and higher.
在该温度曲线的操纵下，逐步的降温造成应力累加，导致应力峰值呈波浪形且越来越高。