The research and prediction of relative elongation of thick - walled tube without mandrel by open - die cold extrusion is the base of the design of tube parts and special equipment
2.
The determination of al toxicity and al - resistant ability in plant root - tip using ul is still not reported . our experiments show that , according to root relative elongation rates ( rers ) , 30 barley cultivars can be divided into three types such as al - resistant cultivars , intermediate cultivars , and al - sensitive cultivars
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