串接钻具时，要按照设计逐根检查，以便确认每个单根的重量、钢级和下井顺序正确无误。
When picking up drill pipe, visually check each joint of pipe picked up to be sure it is in proper sequence according to weight, grade and class as designed.
对于角膜白斑并发斜视的病人，常需角膜移植和斜视手术来恢复视力和外观，两项处理的先后顺序皆具挑战性。
The management of leukoma cornea combined with strabismus and the priority of penetrating keratoplasty or strabismus surgery are challenging.
AD7927具有8个带通道序列器的单端模拟输入，可以通过预先编程选择通道转换顺序。
The AD7927 features eight single-ended analog inputs with a channel sequencer to allow a preprogrammed selection of channels to be converted sequentially.
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