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.
