The target object with all substitutions performed. This property can have a NULL value when an error is encountered in the substitution process.

执行了所有替换的目标对象。在替换过程中遇到错误时，此属性的值可以是NULL。

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CPC combined with BMP can improve the bone reparation and substitution process in massive bone allograft transplantation for the treatment of large segmental bone defects.

CPC复合BMP对大段同种异体骨移植的愈合及替代有增强和促进作用。

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This helps mobile operators lure voice traffic away from fixed-line operators, a process known as “fixed-mobile substitution”.

这种被称为“固定-移动代替者”的方案着实帮助了移动运营商从固定电话运营商那里抢来了不少语音电话业务。

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