A controlled blasting technology was applied to the construction of freezing thick gravel stratum section in the main shaft of Xulou Mine.
许楼煤矿在主井人工冻结巨厚砾岩段施工中，采用了控制爆破技术。
I like to enhance the idea of "positive protection" as the best way to avoid freezing areas where some controlled activities can help to keep its vitality and some economic USES while possible.
我希望强调“积极保护”的理念，这是避免产生“冷冻区域”的最好方法，因为只要采取可控制的活动，即可在保证湿地活力的同时，也有经济利用的可能。
Objective to compare the effect of postoperative intercostal nerve freezing and patient-controlled analgesia in patients undergoing thoracic surgery.
目的比较肋间神经冷冻与静脉自控镇痛治疗开胸术后疼痛的效果及副作用。
Objective to compare the effect of postoperative intercostal nerve freezing and patient-controlled analgesia in patients undergoing thoracic surgery.
目的比较肋间神经冷冻与静脉自控镇痛治疗开胸术后疼痛的效果及副作用。
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