D623 improves water retention of fresh mortar and entrains a large amount of micro air void which causes bulk density to reduce, pore size distribution to change.

D623提高保水新鲜砂浆和夹带了大量的微空隙，这会导致堆积密度降低，孔径分布改变。

youdao

Although still very useful, the Pitbull can rip up air, detect stealthed units, and with the mortar upgrade - demolish buildings and infantry without breaking a sweat.

但他仍旧十分有用——它可以防空、反隐，升级了迫击炮之后，还可以轻松打击建筑和步兵。

youdao

The utility model relates to a pneumatic injection pump, comprising a cover board, a vessel, an air inlet, compressed air, mortar and a grout outlet.

气压式注浆泵主要由盖板、容器、进气口、压缩空气、砂浆和出浆口组成。

youdao

Last week, Palestinians stepped up mortar and rocket attacks, and Israel responded with air strikes.

VOA: standard.2010.01.10

It can also destroy mortar shells in mid-air.

VOA: standard.2010.07.20

Ebisu, with its open-air, brick-and-mortar shopping centre Ebisu Garden Place draws more sophisticated shoppers.

BBC: Seeing Tokyo along the Yamanote Line

Effective, prompt retaliation from the air is hard to imagine if the mortar rounds and Katyushas are being launched, as they will be, from schools, hospitals and mosques.

CENTERFORSECURITYPOLICY: Bolderdash

As you climb the 463 steps leading to the summit of the dome, you appreciate the builders' first great problem: how to haul 30 million kilograms of stone, brick and mortar many meters in the air.

FORBES: Dome of the Brave