松弛的单卷或镰刀状尾巴，尾尖指向颈部，几乎与背部平行的姿势是首选的。

A loose single curl or sickle tail pointing vigorously toward the neck and nearly parallel to the back is preferred.

youdao

测量材料粘弹性性质的传统方法是单轴拉伸松弛或蠕变实验。

Traditionally, the uniaxial tensile test, relaxation or creep, are often used to study the viscoelastic properties of material.

youdao