Idsa
abbr. intravenous digital subtraction angiography 静脉内数字减影血管造影术
🗣️ 情景例句
Nothing ventured, nothing gained.
不入虎穴，焉得虎子。
Do you ever play basketball after school?
你曾经在放学后打篮球吗？
but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves.
但是早期记录地震波的仪器（测震仪）正是采用了这种思路。