He says Iraqi police forced hotel owners to sign papers stating they would not rent rooms to Iranians who were not in possession of legal passports bearing an official Iraqi stamp.
External elastic damping support, if designed reasonably, may obviously improve the natural or forced vibration response characteristics of bearing rotor systems.
设计参数合理的外弹性阻尼支承可以明显改善轴承-转子系统的固有特性及强迫振动响应。
3
Oil may be forced out through the timing cover and rear-main bearing oil seals.