<span><span style、" font-family: 宋体;">半可变(或半固定)成本</span></span>
<span><span style、" font-family: 宋体;">固定成本</span></span>
<span><span style、" font-family: 宋体;">可变成本</span></span>
<span><span style、" font-family: 宋体;">生产成本</span></span>
<span><span style、" font-family: 宋体;">直接成本</span></span>