封箱的英文：
joint sealing

joint是什么意思：
adj. 联合的
n. 关节，接头
v. 链接，使有接头，焊接

The finger joints are called knuckles.
手指的关节叫做指关节。

It's a really classy joint.
这是一个确实高级的公共场所。

That shop is plain a clip joint
那可是不定一家漫天要价、大敲竹杠的商店啊!

A knobbed bone, as of a knuckle or joint.
指节骨一种圆形突出的骨头，如指关节或关节的

It is a joint venture with private industry.
这是一个与私有企业合资的企业。

sealing是什么意思：
n. 猎捕海豹业；密封
v. seal的现在分词

A stamp or seal meant to be impressed.
图章用来盖戳的图章或印章

The experience seals their friendship.
这一经历确定了他们的友谊。

Sealing is prohibited in many countries.
许多国家禁止捕海豹。

The probe unit is hermetically sealed.
探头装置是密封的。

It was stored in a tube with a break seal.
它保存在一个有断裂密封垫的试管里。