well slab的意思|示意

He passed a cairn of stones that once had been a chimney, a dry well covered with a slab of tin so rusty it served as more warning than safeguard.

他经过了一个曾经是一个烟囱的堆石界标，一个盖着生锈的马铁口板的枯井。井盖已经绣得更像是一个告警而不是在起到保护作用。

He passed a cairn of stones that once had been a chimney, and a dry well covered with a slab of the tin so rusty it served as more warning than a safeguard.

他经过了一个曾经是烟囱的石冢，以及一口盖着生锈的锡板的枯井，井盖已经绣得与其说是一种防护，不如说是一种警告。

The combination of prestressed anchorage cable and reinforced concrete beam and slab can well transmit the powerful action force of the cable, which can provide strong blocking and protecting force.

预应力锚索与钢筋混凝土梁和板的结合使用，能较好地传递锚索的强大作用力，提供较大的挡护力。