炮孔定向器

burden

tumor mutational burden， TMB

lay a burden on sb

unabsorbed burden【会计】;unabsorbed overhead【会计】;unapplied overhead【会计】

tax burden ratio【税收】;tax-bearing ratio【税收】;

burden

reduce farmers' burdens; lighten the burden on farmers

under-absorbed burden【会计】;under-absorbed overhead【会计】;under-applied burden【会计】