[化] 刚性杆

rigid rod的用法和样例：

例句

The physical properties of four block copolymers,which containing polysulfone chain and ri8id rod chain,were studied.研究了由低相对分子质量聚砜链段与刚性棒状链段组成的嵌段共聚物的物理性能。

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学英语单词

abstain from an act

actual numerical value

bactrocera (zeugodacus) diaphora