The block is prepared with pulverized fuel ash, natural silica sand and lime through steaming and pressing with a pressure vessel. In particular, a simulated stone layer 3 is added outside the block.

所说的砌块是由粉煤灰、天然硅沙和白灰经高压容器蒸压而成，特别是在砌块的外层有一层仿石层3。

youdao

ObjectiveTo study the role of Governor Vessel (GV) treatment in Bian-stone therapy.

目的：探讨督脉治疗在砭术中的作用。

youdao

Two explosions on board the submarine had been monitored, making it clear that the bow of the Kursk had been ripped open, and the vessel had sunk to the bottom like a stone.

BBC: Analysis: Kursk cover-up

The navy's Portsmouth-based ice patrol vessel sailed to South Georgia as part of its support of environmental work on the island, and the stone was finally returned.

BBC: Stone returned to Ernest Shackleton's grave after 75 years