intermittent failure meaning in English

断续出现的故障
间断性故障
间发故障, 间歇失效
间接性故障
间歇失效

This has resulted in intermittent failures
从而导致失败时有发生。
The script runs similar test cases in parallel and different test cases in sequence in order to avoid intermittent failures caused by running into the same resources or interfering with one another
这个脚本并行地运行相似的测试用例，串行地运行不同的测试用例，这样做是为了避免由于同时访问同一资源或者互相干扰而引起的间歇性故障。