“口径”用英语怎么说？

口径为120毫米的迫击炮的射程是1.8万码。The 120mm mortar has a range of 18,000 yards.我们必须口径一致.We must all say the same.在卡车后面有一只12.7毫米口径的速射机关枪。In the back of the truck was a 12.7 millimeter rapid-fire machine gun....

“口径”的拼音为：kǒu jìng...