Objective To explore a noninvasive transesophageal signal averaging technique for directrecording of sinus node potential (SNP).
目的：探讨无创性经食管信号叠加直接记录窦房结电位（SNP）的技术。
2
Directrecording of all fixed assets, inventory counts, reconciliation's, transfers, theft procedures, warranty returns and all related paperwork.
直接记录所有固定资产、库存、调节、转移、盗窃过程、担保退还，并保留所有相关书面材料。
3
Features - search, repeat, random or shuffle play-back, FM receiver, format compatibility, ability to feed songs through a home stereo, and directrecording capability are some features to consider.