waterglass bonded sand

例句：

1. 1. This type of sand is commonly used in water glass bonding.
   这种沙子常用于水玻璃粘结。
2. 2. The engineer mixed the water glass and sand to create a strong bond.
   工程师将水玻璃和沙子混合以形成牢固的粘结。
3. 3. The sand was carefully poured into the mold, ensuring a perfect bond between the two layers.
   沙子被小心地倒入模具中，确保两层之间完美粘结。