甲状腺切除术

These risk factors include degree of preoperative serum calcium elevation (levels greater than 12, 13, or 14 mg/dL) in patients with adenomas, severe osteoporosis (bone density T-score less than ?3), morbid obesity (body mass index greater than or equal to 40 kg/m2), the removal of more than 1 parathyroid gland, and the manipulation or biopsy of the remaining glands.

Vasher医师解释，这些危险因子包括罹患腺瘤患者术前血清钙的上升的幅度（超过12、13甚至14 mg/dl的浓度）、严重骨质疏松症（T指数低於-3）、病态性肥胖（身体质量指数大於等於40 kg/m2）、切除超过一个以上副甲状腺、以及对於使用剩下的腺体或进行切片。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。