管细胞(内肛动物)

大鼠骨骼肌卫星细胞体外培养生长和成肌特性

X-ray tube housing

boiling tube

lens, magnetic with permanent magnets, cathode ray tube

reverse flanging tube end

Sshachowa spiral tube

tuning-indicator glow tube

gas-fille d discharge tube with gaseous cathode

tube voltmeter