root length 根长 ; 牙根长度 ; 根系长度
specific root length 比根长 ; 和比根长
root length and width 根系长度和根幅
Root Length Density 根长密度
relative root length 相对根长
Root length density production 落叶松平均细根生长
tap root length 主根长
Nitrogen supply had no effect on average root length density.
施氮对平均根长密度的影响差异不明显。
参考来源 - 膜下滴灌水氮对棉花根系构型的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
As you can see, along the length of the hair, there are three main parts called the bulb, the root and the shaft.
如你们所见，顺着头发的长度可以分为三个主要部分，分别是毛囊、毛根和毛干。
The root systems were all the same, but the stems of the treated plants had an average length of 6cm, compared with 3.5cm for the untreated plants.
根系特征表现一样，但是实验组植株的茎长平均达到6 cm，对照组为3.5 cm。
On the 27th day of the experiment, the researchers measured stem length, root-system length and the overall weight of the plants.
实验第27天，研究者测量了茎的长度，根系长度以及植物总重量。
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