位于颈部气管前，由左右两叶及中间狭窄的的峡部构成。
The thyroid gland has a right lobe and a left lobe connected by a narrow isthmus.
位于颈部气管前，由左右两叶及中间的峡部构成。
The thyroid gland has a right lobe and a left lobe connected by a narrow isthmus.
转子泵的转子叶数可能是两叶或三叶。
Number of lobe of rotor in rotating pump may be two or three.
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