Timely treatment of photocoagulation and (or) cryotherapy for prethreshold type 1 and threshold disease of ROP may lead to famous prognosis.
对阈值前病变1型和阈值期ROP进行及时的激光和（或）冷冻治疗具有比较满意的疗效。
rop)run-of-paper (
编辑)随意决定登载位置的Timely treatment of photocoagulation and (or) cryotherapy for prethreshold type 1 and threshold disease of ROP may lead to famous prognosis.
对阈值前病变1型和阈值期ROP进行及时的激光和（或）冷冻治疗具有比较满意的疗效。
The deep formation has a high degree of hardness and abrasivity;the bit type selection is difficult and the ROP is low especially under the high density mud.
深部井段地层的
度高、研磨性强，钻头选型困难，特别是在高密度条件下机械钻速低。
声明：以上例句、词性分类均互联网资源自动生成，部分未经过人工审
，
达内容亦不代本软件的观点；若发现问题，欢迎向我们指正。
