Objective to Study the head the diagnosis for difficult delivery to handle and prevent.
目的探讨头位难产的诊断、处理及预防。
Since many orders in hand, apologized difficult to meet in advance of delivery.
由于在手定单甚多，提前交货歉难满足。
Since many orders in hand, apologized difficult to meet in advance of delivery.
由于在手定单甚多，提前交货歉难满足。
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