However , the noise spectrum of the ash exhauster always centers at low frequency range.排粉机噪声呈明显的低频特性.The utility model relates a linkage device of a cooking fume exhauster and a gas stove.一种燃气炉与抽油烟机的联动装置....
The decidua of both normal pregnant rats and abortion were also scratched for TUNEL.同时取正常与流产大鼠的蜕膜作TUNEL染色,观察凋亡情况.The abstracted tissue contained normal endometriu m , remaining decidua and a small amount of chorion villi...
The documents contain a blueprint for a nuclear device.文件内附有一张核装置的设计蓝图。The suspect had refused to give any details of his identity and had carried no documents on his person.嫌疑犯拒绝说出他的具体身份，而且身上没有携带任何身份证明。You can use this ...