| 释义 | 
             
                periotic duct
                
            periodonticsn. (单复同)牙周病学periodicityn. 定期;周期性 周律preproductionn. 试制(试生产)overproductionn. 生产过剩nonproductiveadj. 非生产性的;对生产无直接关系的productivityn. 生产率, 生产力
 输精管shū jīng guǎn 
 spermaduct; deferent duct; seminiferous duct; testicular ducts泪管lèi guǎn 
 tear duct; lachrymal duct鳔管biào guǎn 
 pneumatic duct波导bō dǎo 
 waveguide; duct胆管dǎn guǎn 
 bile duct缪管miù guǎn 
 paramesonephric duct排泄管pái xiè guǎn 
 duct唾管tuò guǎn 
 salivary duct缪勒管miù lè guǎn 
 Mullerian duct输送管shū sòng guǎn 
 duct, pipage胰管yí guǎn 
 ductus pancreaticus; pancreiatic duct导管dǎo guǎn 
 conduit; pipe; catheter; meatus; duct鼻泪管bí lèi guǎn 
 canalis nasolacrimalis; ductus nasolacrimalis; naso-lacrymal duct输卵管shū luǎn guǎn 
 oviduct; fallopian tube; salpinx; ovarian ducts烟道yān dào 
 flue; gas duct; funnel; gas flue; chimney flue
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