Carrot root mass and diameter were superior to mean traits of parents in heredity.

根重、根粗性状在遗传中表现出较高的超中亲现象。

And plants need to keep the root mass in some rough balance with the leaf mass to be happy.

植物都需要保持住根群同时和茎群保持大致的平衡以便维系。

Based on the measured data from the winter wheat fields in Zhengzhou of Henan Province, the vertical distribution of root length density(RLD)and root mass density(RMD)were analyzed.

根据在郑州进行的冬小麦根系田间实测资料，研究了根长密度和根质量密度在砂壤土中的垂直分布。

Another way of countering drought is to have a limited amount of mass above ground and to have extensive root networks below ground.

对付干旱的另一种方法是在地面上种植特定数量的植物，并且确保地下有广大的根系网络。

m And so you lose your m, and so you see that y center of mass then becomes the square root of three divided by eight times l.

你失去了，得到了y轴质量中心,成了平方根,3除以8再乘l开方。