It does not provide QoS or delivery guarantee.

它没有为上层提供任何服务质量和投递保证。

youdao

Our aim: safety first, quality first, delivery guarantee, customer satisfaction.

阀门的宗旨是：安全第一，质量至上，保证交期、客户满意。

youdao

Guarantee levels: Tribes supports 3 levels of message delivery guarantee (NO_ACK, ACK, and SYNC_ACK).

有保证的消息传递：保证级别：Tribes支持3个级别的消息传递保证(NO_ACK、ACK和SYNC_ACK)。

youdao

Exports are supplied on long-term contracts that guarantee delivery many years ahead.

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For example, if a company is shipping products internationally, but still needs to guarantee delivery to receive full payment or to maintain contractual obligations, it faces a potentially complex set of options to complete the delivery.

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The railroads were interested and would guarantee delivery in five days, provided a couple of things: That the train ran at least once a week, so the railroads could be sure that the cars and locomotives it dedicated to the service would be used regularly, and that Pollak deal with loading and unloading the delicate goods.

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