casual inspection

• 不定期检查

casual inspection的用法和样例：

例句

1. Are all fences being taken regular inspection for integrity anddamage?
   工厂可有定期检查墙外确保完整无损？
2. This valve requires periodic inspection and verification of the outlet temperature by a licensed contractor.
   这种阀门需要由得到许可的承包商进行定期检查和确认出水口温度。
3. Have final sampling inspection on Flooring at OEM site according to quality inspection criteria.
   在外包工厂根据质检标准进行产品最终的抽检。