The statement "the electric hoist and crane complement each other and lack complementarity" seems to contain a contradiction. Let's break it down:

Complementarity:

In general, complementarity refers to the ability of two or more things to work together to enhance each other's functionality or effectiveness.

In the context of industrial equipment, complementarity often means that different pieces of equipment are designed to work seamlessly together to achieve a common goal.

Electric Hoist and Crane:

An electric hoist is a lifting device that uses an electric motor to raise and lower loads.

A crane, on the other hand, is a type of machinery that uses cables or chains and pulleys to lift and move heavy objects. Cranes can be equipped with various lifting devices, including electric hoists.

Complementarity of Electric Hoist and Crane:

When an electric hoist is mounted on a crane, the two devices complement each other. The crane provides the structure and mobility to position the hoist, while the hoist provides the lifting capability.

Together, they form a versatile and powerful lifting system that can handle a wide range of loads and applications.

Lack of Complementarity:

If the electric hoist and crane are not designed to work together or if they are incompatible in some way, then they would lack complementarity.

However, in most cases, electric hoists are specifically designed to be compatible with cranes, so this scenario is less likely.

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