您要查找的是不是：
- Period-doubling链Period-doubling chain
- safe period (避孕)安全期
- (=period) 期间，时期，时代pd.
- 现在全国育龄夫妇采取各种避孕措施的人数约占75%左右。At present, about 75 percent of the couples of child-bearing age throughout the country are resorting to various kinds of contraceptive practices.
- selling period (证券)销售期间
- 后服避孕丸morning-after pill
- draw period (地下水的)抽降期
- 为女性研制的所有避孕方法能被所有的妇女安全地运用。All contraceptives developed for women can safely be used by all women.
- silence period (报务用语)静默时间
- 避孕商品contraceptive commodities
- deenergized period (继电器的)释放期间
- 延缓避孕contraceptive delay
- (=period of unconsciousness) 无意识期per. unc.
- 避孕泡沫contraceptive foam
- readiness for sea period (船大修后)准备出航时期
- 生理避孕法physiological contraceptive
- 化学避孕剂chemical contraceptive
- 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
- 混合避孕法contraceptive mix
- 整个发布集的保持期,发布集的单位由retention_period_unit列的值指示。The retention period for the entire publication set, where the unit is indicated by the value of the retention_period_unit column.
