upper chain

This paper gets the discrete version of the continuous horizontal complex via the finite element method, the finite element form of the vertical complex by virtue of the cochain, the vertical functional complex produced by the equivalence relation of the vertical forms through a coboundary operator.

本文用有限元方法给出连续水平复形的离散形式，用上链定义了垂直复形的有限元形式，用上边缘算子构造出垂直形式的等价类，得到垂直泛函复形。

injective cochain complex

内［单］射上链复形

detach a link from a chain

从链子上拆下一个链环

To become fastened or unfastened by a zipper.

拉开拉链，拉上拉链

A tooth of a sprocket wheel.

扣链齿链轮上的一个扣链齿

muzzle an anchor

挽绑锚链(用小绳将锚链挽绑在锚杆上

Any member of the alkane series.

链烷，烷烃烃链上的任一成分

One of the links of the chain that drives the wheels had snapped.

轮子的链条上断了只链环。

The prisoners were chained to the wall.

囚犯们被铁链锁在墙上。

cleated tire chain

装在轮胎上的抓地板链

They wore their gold necklaces and earrings.

戴上了金项链和金耳环，

The monkey was chained to a tree

猴子被用铁链栓在树上。

chain a dog for the night

晚上用链子把狗拴起来

She zipped up her dress.

她拉上了衣服的拉链。

Your fly is open.

你(裤子)的拉链没拉上。

wrench a window off its hinges; wrench oneself free from somebody's grip; also metaphorically: a deep sigh was wrenched from his chest.

把窗子从铰链上拧下来。

take the door off its hinges and rehang it

把门从铰链上卸下重装

Separate hinge from door.

从车门上拆开铰链。

Hinges work better with oil.

铰链上油后就灵活了。