alter an agreement

• 1. 变约: alter an agreement
• 2. 改变约会: Change the Appointment | Changing appointments | Changing an Appointment
• 3. 不变约束: constraint independent of time | nonvarying constraint | invariant constraint

更多释义

• 1.人口密度的上升，结合其他如气候变冷变旱的因素，使采猎为生的纳图夫人(Natufian—约公元前1万年的史前人)短缺橡果、羚羊和野草种。
  Rising human population density, combined perhaps with a cooling, drying climate, left the Natufian hunter-gatherers of the region short of acorns, gazelles and wild grass seeds.
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• 2.针对化为规范型约非线性系统，讨论了对其实施变结构控制问题。
  Then based on the normal form systems, variable structure control and some related problems were discussed.
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• 3.菠萝果皮中原花青素含量是果肉的5倍，总酚含量高约50%，叶绿素主要存在于果皮中，这些物质是引起带皮榨汁法比去皮榨汁法产品褐变严重的主要原因。
  Proanthocyanidin content in pineapple peel was about 5 times to fruit pulp, and the total phenol content was approximately 50% higher, chlorophyll mainly exists in peels.
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