A cup of filter coffee contains about three times as much caffeine as a cup of tea, although dry tea leaves do contain a higher proportion of caffeine by weight than coffee beans.
一杯过滤咖啡含有的咖啡因大约是一杯茶的3倍，尽管从重量上看，干茶叶所含咖啡因的比例确实比咖啡豆高。
The thickness and dry weight of the leaves increase.
叶片厚度、干物重及单位面积的叶片重量增加；
Triacontanol (TRIA) can Increase chlorophyl content of the flag leaves of wheat plant, the dry weight of juvenile claduses and the speed of filling.
三十烧醇能提高小麦从旗叶叶绿素含量、幼穗的干重及灌速度。
Aqueous extract of the leaves reduced the chlorophyll of peanut leaves, net photosynthesis rate and dry weight by 31.95%, 32.65% and 37.93%, respectively.
其中三裂叶蟛蜞菊叶水提液分别使花生叶片叶绿素含量、净光合速率和单株干物重降低31.95%、32.65%和37.93%。
The protein content in leaves was high significantly higher than that in tuber and stem, with stems having lowest level of protein, on the basis of both fresh and dry weight.
结果表明：以干、鲜重为基础的叶片蛋白质含量都极显著高于块茎和茎秆，茎秆含量最低；
The heritability of dry matter content, number of green leaves and length of vine was higher, weight of fresh tuber, weight of marketable tuber and weight of dry tuber have lower heritability.
广义遗传力以烘干率、绿叶数和蔓长较高，而鲜薯重、大中薯重和薯干重的广义遗传力较低。
The changes of leaf ratio of dry to fresh weight in flue-cured tobacco green leaves during the field growth were studied.
田间状况下对烤烟下、中、上三个部位叶片生长发育过程中叶片干鲜比值的变化进行了研究。
The changes of leaf ratio of dry to fresh weight in flue-cured tobacco green leaves during the field growth were studied.
田间状况下对烤烟下、中、上三个部位叶片生长发育过程中叶片干鲜比值的变化进行了研究。
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