Fuses are selected to allow passage of normal current and of excessive current only for short periods.

保险丝的选择允许通过正常电流和瞬时过大电流。

Singlecrystalline silicon itself does not allow passage of electric currents.

单晶硅本身不对电流产生通道。

The Customs will accept declarations upon presentation of the license to examine and allow passage of the items in accordance with the relevant State regulations.

海关凭军品出口许可证接受申报，并按照国家有关规定验放。