phanerophyte是什么意思

用法例句

make section in a low position without high thread-drawing drain of wide trauma spacious set;the control one take low section,make an exit at the top fistula pipe at the high position,slowly cut with rubber thread,tighten the thread 7~10d after operation.

[目的]探讨问题高位(复杂性)肛瘘有效治疗方法。