单词	isolated beam
释义	isolated beam 独立梁
随便看	class of operation class of options class of paths class of peasant class of periedic functions class of periodontal diseases class of permutation class of permutations class of pollution class of positions class of post-graduates class of practitioners class of precision class of pricing practice class of procedure class of procedures class of property class of quadratic forms class of railway class of readers class of recursive set class of repairs class of resistance to acids class of resistance to alkalis class of risk