'complementary force' is correct and usable in written English.
You can use this phrase to refer to two or more forces working together to form a singular, stronger force. For example, "The two forces combined to form a complementary force that allowed them to accomplish their mission".
The expressive use of color is a complementary force.
Three nearby chambers one holding more than 1,300 ceramic figures representing a smaller, complementary force of foot soldiers, chariots, and cavalry, one with 68 members of what probably represents an elite command unit, and one that is empty were also discovered in the 1970s.
Key to this model is the concept that this stabilizing tensile "prestress" results from a complementary force balance between multiple, discrete, molecular support elements, including microfilaments, intermediate filaments and microtubules in the cytoskeleton, as well as external adhesions to extracellular matrix and to neighboring cells.
The two complementary forces are expressed by Mr. Dodin and his cast through a sense of heightened and occasionally frank sexuality.
In ancient China, pain was thought to arise from an imbalance between the two complementary forces of life, yin and yang.
Laozi taught that the Tao, the Way or the Principle, was born of primordial chaos and gave birth to heaven, earth, the complementary forces of yin and yang and "all the 10,000 things".
The 12 tones can also be found placed in two sets of six on imperial panpipes (paixiao) in keeping with the yinyang principle of complementary forces (e.g., female-male) of Chinese metaphysics.
In essence, traditional Chinese healers seek to restore a dynamic balance between two complementary forces, yin (passive) and yang (active), which pervade the human body as they do the universe as a whole.
Even as his government is negotiating the terms for a lasting American military presence, in just the past two weeks he has ordered Special Operations forces out of a critical province, railed against C.I.A. plots, rejected American terms for handing over detainees and, most recently, even equated the United States and the Taliban as complementary forces working to undermine the government.
For the debate on structure and agency as complementary forces see Bourdieu 1977 or Hurrlemann 1988.
In Chinese philosophy, the universe consists of two opposing but complementary forces: yin and yang.
