Incomplete penetration
[化] 未焊透
🧩 词语组成解析
penetration
[,pɛnɪ'treʃən]
n. 渗透;穿透;[军]突破;洞察力;
🗣️ 情景例句
A dollar is valued at eight point two RMB yuan.
一美元价值8.2元人民币。
The stronger the motivation, the more quickly a person will learn a foreigh language.
一个人学外语的动力越强大、学得就越快。
Experiments have proved that children can be instructed in swimming at a very early age.
实验证明，儿童在很小的时候就可以开始学习游泳。