环节的英文：
connection
link

参考例句：

segmental organ
【生】环节器官

A chain is no stronger than its weakest link. ——Conan Doyle
一条铁链的坚固程度取决于它最弱的一个环节。——柯南道尔

Any of various segmented,burrowing marine worms of the genus Arenicola,especially A.marina,often used as fishing bait.
沙?，海蚯蚓一种沙?属的环节穴居海生蠕虫，尤其是海沙?，经常用作鱼饵

Proporional element (amplification element)
比例环节(放大环节)

Integral element
积分环节

Inertia element (aperiodic element)
惯性环节(非周期环节)

Secondary derivative element
二阶微分环节

The infirmary is the most unsubstantial part of the whole security system.
医务室是整个保安体系中最薄弱的环节。

The plan was to have an audience of the son of Heaven.
计划里是有觐见天子的环节的。

We must take firm hold the key link of our work.
我们要牢牢抓住工作的主要环节。

connection是什么意思：
n. 连接；连接点；联运交通工具；熟人；亲属

elbow connection
弯头连接

A connect request was made on an already connected socket.
在一个已经连接的套接字上做了一个连接请求。

connection point manager.
连接点管理程序。

The connection to the remote computer was broken.
跟远程计算机的连接被打断。

The two railroads connect at Beijing.
这两条铁路在北京衔接。

link是什么意思：
n. 环；节；联系，纽带
v. 连接；联系；挽住

open link cable
开口链环锚链

The strength of the chain is in the weakest link.
链子的承受力在于最薄弱的一环。

They forged the links with the Labor Party.
他们与工党建立了联系。

The thermostat is connected by a link to the carburetor
恒温控制器是由一根连杆与汽化器相连的。

Diet and health are strongly linked.
饮食与健康是紧密联系在一起的。