leaf age中文什么意思

• 叶龄

• leaf:    n. 〔英军俚〕休假。
• age:    n. 1.年龄。 2.成年〔满廿一岁〕。 3.老年，晚年 ...
• leaf age index:    叶龄指数
• ratio of leaf age:    叶龄率
• -age:     后缀 〔名词词尾〕 1.集体： cellarage, baggage. 2.地位、身份、状态： baronage, bondage. 3.动作： breakage, passage. 4.费用、租金： cartage, postage.

例句与用法

1. Scientists have long thought that the bright colors of autumn foliage were just the by - product of how leaves age when they cease photosynthesis , but hagen and his colleagues report that the earlier and the more trees changed color , the less damage from chewing occurred the following season
   长久以来，科学家都认为秋天鲜?的树叶颜色，不过是叶子老化、不再行光合作用后的副产品罢了；然而哈根及同事的报告却指出，如果树木变色的时间越早、数量越多，下一季受到虫咬的伤害就越低。
2. When sparsely - planted rice overgrew its earing period , light intensity in the mid - lower part increased , photosynthesis prolonged , activity of nitrate and peroxide decreased , protein content increased by more than 50 % , velocity of leaf ageing slowed , but accumulation of dry matter of grain accelerated and 1000 - grain weight increased too
   摘要稀植栽培的水稻，抽穗后田间表现为中下部光强明显增加，光合作用时间延长，硝酸还原酶和过氧化物酶活性降低，蛋白质含量增加50 %以上，叶片衰老延缓，籽粒干物质积累加速，千粒重提高。

其他语言

leaf ageとは意味：葉齡