您要查找的是不是：
- 混凝土concrete
- 钢筋混凝土reinforced concrete
- Period-doubling链Period-doubling chain
- safe period (避孕)安全期
- 钢筋混凝土结构reinforced concrete structure
- (=period) 期间，时期，时代pd.
- selling period (证券)销售期间
- 混凝土浇筑concreting
- draw period (地下水的)抽降期
- 混凝土结构concrete construction
- silence period (报务用语)静默时间
- 砖混凝土brick concrete
- deenergized period (继电器的)释放期间
- 混凝土搅拌机concerete mixer
- (=period of unconsciousness) 无意识期per. unc.
- 细石混凝土fine gravel concret, fine aggregate concrete
- readiness for sea period (船大修后)准备出航时期
- 素混凝土plain concrete
- 商品混凝土commercial concrete
- period基因的Thr-Gly区段在果蝇和部分双翅目昆虫中的分子进化特征Molecular Evolution of the Thr-Gly Region of the period Gene in Drosophila and Some Dipterans
