duàn lián ㄉㄨㄢˋ ㄌㄧㄢˊ 段联（段联）
机务段联系电路 liaison circuit with a locodepot
三段联轴节总成 triple ended coupler assembly
联接字段 join field
选择外表关联字段 linkfield
下拉外表关联字段 linkfieldselect
一段串联单程通过工艺 single-stage once through reaction loop
分段式多级泵联轴器 segmental type pump coupling ; stage casing pump coupling ; multistage turbine pump coupling ; multistage segmental type pump coupling
联会段 pairing segment
段间换位联线 transposed connection between disks
联系阶段 associative stage
目的：探讨急性前壁心肌梗死合并下壁导联ST段压低的临床意义。
Objective:To study the clinical significance of inferior ST segment depression in patients with anterior acute myocardial infarction.
目的探讨心电图下壁导联ST段压低与急性前壁心肌梗死（AMI）的相关性。
Objectives This study assessed the relationship between inferior ST-segment depression and anterior acute myocardial infarction (AMI).
目的：探讨急性心肌梗死(ami)伴有对应导联s T段改变的临床意义。
Objective: To study the clinic significance accompanied st change of correspondence lead in acute myocardial infarction (AMI).
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