所有科技知识-科学参考

科学参考收录了1248194条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。

periodo-ethane	periodo-ether	periodo-ethylene	period of adjustment	period of analysis
period of a variable star	period of bloom	period of commutation	period of compensation	period of contact
period of contraction	period of crop-rotation	period of depreciation	period of disease	period of dormancy
period of duration	period of elongation	period of emergence	period of expansion	period of freezing weather
period of growth	period of half change	period of heating	period of immaturity	period of isometirc relaxation
period of lease	period of light variation	period of line	period of load development	period of loading
period of motion	period of operating cycle	period of optical cycle	period of pregnancy	period of reservior with full water
period of retention	period of revolution	period of sampling	period of saturation	period of schooling
period of service	period of S.H.M.	period of slack sales	period of slow-wave structure	period of storage
period of tillage	period of uncovering	period of use	period of validity	period of vigorous economic development
period of wave	period of waves	periodogram	periodogram analysis	periodograph
periodo-hydrocarbon	periodometer	periodontal abscess	periodontal arteriole	periodontal atrophy
periodontal cyst	periodontal disease	periodontal dressing paste	periodontal fiber	periodontal file
periodontal ginivitis	periodontal infection	periodontal ligament	periodontal membrane	periodontal membrane fiber
periodontal pack	periodontal pocket	periodontal pocket packing	periodontal principle fibers	periodontal probe
periodontal prosthesis	periodontal pyorrhea	periodontal scaling	periodontal surgical instrumentarium	periodontal tissue
periodontal trauma	periodontal treatment	periodontia	periodontics	periodontic scaler
periodontitis	periodontium	periodontium hypertrophy	periodontoclasia	periodontology
periodontopathy instruments kit	periodontosis	period oscillator	periodoscope	period parallelogram
period project	period range	period-redius relation	period regulator	period resolution
period section steel	period shut-down	period-spectrum relation	periods per second	periodynia
perionychia	perionychium	perionyxis	perioophoritis	perioophorosalpingitis
perioothecitis	perioothecosalpingitis	perioral	perioral cyanosis	periorbit
periorbita	periorbital	periorbititis	periorchitis	periorchitis purulenta
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