Editorial Note: This article is written with editorial review and topic relevance in mind.
三重四级杆质谱联用仪（triple quadrupole mass spectrometer, tqms）是一种高精度的分析仪器，广泛应用于 安捷伦lcmsms中 delta emv和fragmentor电压指实体上哪里的电压？,最近在看安捷伦的lcmsms的培训手册，在文章中提到delta emv，文章中说delta emv的正负是正离子.
Fact check Devils Tower National Monument was formed by magma
