delivery time based on 20' FCL 这话什么意思啊EC21上老外的要求

delivery time delivery time based on 20' FCL 这话什么意思啊EC21上老外的要求 delivery time period是什么意思 guaranteed delivery time是什么意思 time-based performance是什么意思 time-based什么意思 Delivery time expired什么意思 delivery time 具体指什么? 怎么理解Order delivery time time-based main-teance service at the time of delivery implies “clean Delivery Delivery delivery time 和LEAD TIME意思相同吗? time of shipment /time of delivery 的具体区别是什么 请帮忙翻译：The parties concerned close a delivery contract based on the available OEM- Contract, negative effects of over Time-Based competition delivery time /delivery date/shipping time/shipping date/lead time倒底是什么意思呢?我想要中文的解释,