Only the powder crystal of ammonium magnesium carbonate tetrahydrate prepared was reported in previous literature, but there was no report on the synthesis of its single crystal.
对于碳酸镁铵的合成，通过查相关资料，前人仅制得该物质的粉末晶体，并未见有合成单晶的报道。
2
The fire extinguisher is calculated and adopted the salt dry powder extinguisher of portable ammonium phosphate.
灭火器经计算采用手提磷酸铵盐干粉灭火器。
3
Sawdust is one of solid combustible agent used in powderammonium nitrate industrial explosive, which acts as sensitizer and looseness, but modification research on sawdust is little.