ammonium metaborate

例句：

1. 1. This compound is used asa buffer in chemical reactions to prevent pHchanges.
   这种化合物在化学反应中用作缓冲剂，以防止pH变化。
2. 2. Theammonium metaborate was added to the solutionto adjust its pH.
   向溶液中加入氨四氢碳酸盐以调整其pH值。
3. 3. The laboratory uses this compoundfor its ability to neutralize acids andbases.
   实验室使用这种化合物来中和酸和碱。