Applying pump pressure then activates a sliding collar that opens access ports, enabling circulation across the upper casing interval.

然后施加泵压，使滑动箍启动，于是使进入口开启，从而能够穿过套管上段进行循环。

youdao

For each rule, you specify a protocol, a range of ports, and a range of IP addresses allowed to access those ports via that protocol.

对于每个规则，您要指定一个协议、一个端口范围以及允许通过那个协议访问那些端口的一个IP地址范围。

youdao

A task is a collection of threads and access rights to memory objects and ports.

任务是存储对象和端口的线程和访问权限的集合。

youdao

China's shipping industry has lobbied against such ships, fearing they may strengthen Vale's dominance on the dry-bulk market and China's Ministry of Transport has restricted their access to its ports.

WSJ: Global Shipping Faces More Choppy Waters

Under the sanctions, five neighboring nations will close their borders to landlocked Mali except for humanitarian purposes and deny the nation access to their ports, freeze its accounts in regional banks and suspend its participation in cultural and sporting events.

CNN: Grave conditions reported as rebels capture northern Mali

Under the sanctions, five neighboring nations were to close their borders to landlocked Mali except for humanitarian purposes and deny the nation access to their ports, freeze its accounts in regional banks and suspend its participation in cultural and sporting events.

CNN: Mali's president steps down