Finally, a synthetic expression for sequential test calculation is derived, from which OC, ETT and confidence limit on the MTBF can be calculated.
最后导出序贯试验计算的综合表达式，用它可以计算oc、ETT和MTBF的置信限。
The timing of the bronchospasm and the placement of the endotracheal tube (ETT) may also be helpful.
支气管痉挛的发生和气管插管有一定的相关性。
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