add strength to

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References in classic literature ?
Not too old to marry so that your seed will add strength to the tribe.
Summary: New Delhi [India], November 10 (ANI): Prime Minister Narendra Modi on Friday said the recommendations made by the Goods and Services Tax (GST) Council would benefit the citizens and add strength to the GST, soon after the 23rd council meeting took place.
Doncasters is manufacturing the torque tubes via centrifugal investment casting using a titanium alloy, which will add strength to the torque tubes while minimizing their mass.