intermittent service

基本解释

The scouts were nominally under the control of Zambia’s park service, but they were paid, at best, irregularly, and were in only intermittent communication with their superiors.
巡防队员名义上是受赞比亚国家公园管理机构管辖，但是他们的工资即便有人发也是断断续续的，而且他们与上司的联系也不紧密。
The reporter passed her time in captivity reading, walking in circles around her cell for exercise and planning when she would wash her hair, because water service was intermittent, she added.
被囚的凌志美以看书打发时光，要锻炼身体就绕着囚室走几圈，想洗头发了就先计划好--她说这是因为水的供应总是断断续续的。
Series 2300 Direct Operated Water Pressure Reducing Valves are designed for dead-end water service where the flow is intermittent and changes rapidly, as on domestic water system.
系列2300直接操作水减压阀适用于室内水系统流量有间歇性变化和变化迅速的终端水应用场合。

There's a whole discipline, called queuing theory, on scheduling service to cope with intermittent demand.
FORBES: Hurry Up And Wait