1）可适当手动补加少量HF；2）增大HF补加量。

1）可适当手动补加少量HF；
2）增大HF补加量。

ผลลัพธ์ (อังกฤษ) 1:

1) may be appropriate to manually adding a small amount of HF;2) increase the amount of HF addition.

ผลลัพธ์ (อังกฤษ) 2:

1) may be appropriate to add a small amount of manual supplement HF;
2) increasing the amount of additional HF.

ผลลัพธ์ (อังกฤษ) 3:

1) can be appropriate to manually add a small amount of HF;2) increase the amount of HF supplement.