The phrase "external materials" is correct and usable in written English.
You can use it when you are referring to resources or materials from an outside or external source. For example, "In order to better understand the topic, I consulted several external materials."
Homogenates of tissue are useful in studying metabolic processes because permeability barriers that may prevent ready access of external materials to cell components are destroyed.
External materials are also organic, with local basalt stone in the garden, copper on the roof and durable wood finishes that can handle the salty air and intense exposure to the elements.
Orthopedic conditions that utilize external materials to aid in fracture healing include screw augmentation, open tibial plateau fractures, and vertebroplasty.
Wound healing is a complex biological process that depends on the wound condition, the patient's health, and the physicochemical support given through external materials.
Without additional training data or external materials, this approach yields state-of-the-art performance on the shallow parsing and base-chunking benchmark datasets (94.50 and 93.12 in F rates).
Polymer-based tissue engineering is a promising approach for meeting the shortcomings of external materials such as autografts, allografts, and calcium phosphate cements, due to the properties of polymeric materials (including mechanical properties, degradation rate, and microstructure).
Descartes' strategy for proving an external material world has two main parts: first, he argues for the externality of the causes of sensation; second, he argues for the materiality of these external causes.
The membrane between our chaotic inner lives and external material reality is permeable in Murdoch — she writes of the U.F.O.
Since particles were washed and calcined prior to evaporative drug loading, it is presumed that this external material is drug crystalized on the surface of particles.
Despite such arguments, in his Passions of the Soul (1649), which he dedicated to Queen Christina of Sweden (reigned 1644 54), Descartes holds that most bodily actions are determined by external material causes.
Unlike other Buddhist sects then in existence in Japan, the Tendai sect taught that there could be meaning and value in the external material world and that the teachings of the Buddha are accessible to all, not just to a select few.
