Standard Test Method for Density of Plastics by the Density - Gradient Technique.

用密度梯度法测定塑料密度的试验方法.(英文版).

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The high optical quality Yb ∶ YAG boules, 76 mm in diameter, were grown by temperature gradient technique ( TGT ).

应用温梯法生长出直径为76mm的 Yb∶YAG 晶体.

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The finite - difference frequency - domain method with preconditioned conjugate - gradient technique is presented for three - dimensional electromagnetic scattering problems.

引入预条件共轭梯度法,提出了结合频域有限差分法分析三维电磁散射问题.

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