There have been some problems such as low coal recovery and difficult management after coal mining in steep seam mining method.

急倾斜煤层的回采一直存在着回采率低、采后难以管理等实际问题。

youdao

Admission of the extreme elderly trauma patient is becoming more commonplace and presents us with difficult management decisions.

年龄非常大的患者就诊正变得越来越普遍，这给我们治疗决策带来很大困难。

youdao

Its characters are: serious conditions, quick change, more shock, easy misdiagnosis, difficult management, more complications and high mortality.

其特点是：伤情重、变化快、休克多、易漏诊、处理难、并发症多且死亡率高。

youdao

Its characters are: serious conditions, quick change, more shock, easy misdiagnosis, difficult management, more complications and high mortality.

其特点是：伤情重、变化快、休克多、易漏诊、处理难、并发症多且死亡率高。

youdao