'difficulty of maintenance' is correct and usable in written English.
You can use it when referring to the difficulty or difficulty factors associated with maintaining something. For example, "The difficulty of maintenance when it comes to machinery can cause delays in a manufacturing process."
Owing to the swamps and the lack of local population and the difficulty of maintenance, from Chernyshevsk to the town of Magdagachi, a long way to the east, there was in effect no vehicle road.
Furthermore, the users of a sports center can be anyone living near it rather than a fixed group of people, thus increasing the difficulty of maintenance.
The main limitations of the nude mouse model are small animal size, therefore small sample size, along with difficulty of maintenance on an acceptable, isolated pedicle, and limited longevity.
It is now well recognized that taking into account Remote Handling (RH) as the main maintenance tool in controlled areas since the inception of a project, reduces the difficulty of the maintenance tasks and increase the overall reliability of the maintenance procedures.
Each of the indices was divided into six degrees indicating the roadway design difficulty in the given geological-mining conditions and also the difficulty of its maintenance.
Preservation of contralateral function would unavoidably increase the difficulty of consistency maintenance.
(1) The difficulty of development of maintenance tool is alleviated by sector replacement and the radiation dose environment less than 10 Gy/h in a reactor chamber.
Rubik's modular construction has been compared with Lego in terms of product durability as it can be taken apart without much difficulty, enabling ease of maintenance and repair.
It is this second cost that is most studied, largely due to the difficulty of partitioning the maintenance cost from other physiological systems.
This model also envisions the difficulty with the shortage of maintenance failure data by making use of Bayesian approach and PROMETHEE II for decision making.
Therefore, it is improbable that this degree of overweight may be associated with a physical difficulty in maintenance of hygiene following defecation.
