concrete sample的用法和樣例：
例句
- This paper studied the fatigue properties of the plain concrete under constant amplitude flexural cyclic loading.
在室內混凝土試件彎曲疲勞試驗的基礎上，研究了素混凝土受彎試件在等幅重復荷載作用下的彎曲疲勞性能。 - In this paper we make great efforts to measure the length variance of specimens in every condition to study volume stability of phosphate concrete.
通過(guò)測量磷酸鹽混凝土試件在不同情況下長(cháng)度的變化，對磷酸鹽混凝土的體積穩定性進(jìn)行了相關(guān)的研究。
