“file hardness”的概念、定义、翻译、参考文献-科学参考

单词	file hardness
释义	file hardness [`fīl ´härd·nǝs] ^ENGINEERING Hardness of a material as determined by testing with a file of standardized hardness; a material which cannot be cut with the file is considered as hard as or harder than the file.
随便看	proton stability constant proton storage ring proton synchrotron proton vector magnetometer protophilic protophloem Protophyta protoplasm protoplast protoplast fusion protopodite Protopteridales protoquartzite protore Protosireninae Protospondyli protostar protostele Protostomia protostratigraphy Protosuchia Prototheria prototroch prototrophic prototropy

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