文中采用了几种预条件技术来降低算子方程的条件数。
Several preconditioning techniques have been used to reduce the condition number of the operator equations.
把不完全乔里斯基预条件技术应用到其积分方程，极大地改善了其谱特性，加速了矩阵方程的迭代收敛。
The IC precondition technique is applied to the integral equation to improve the spectral properties and accelerate the iteration speed of matrix equation.
本文还研究了几种预条件技术，用于改善算子的条件数，进一步加速迭代，同时用数值结果对比了各自的优劣。
Some preconditioner technique is also studied to improve the condition number and further accelerate iterations, comparisons are made between them by numerical results.
安全预评价是一个复杂的技术经济系统工程，其影响因素、关联变量和约束条件复杂。
The safety pre evaluation is a complex technology economic system engineering and it is complex due to influential factors, on relation variables and constraining conditions.
首先将有理函数阻抗矩阵插值技术应用于采用预条件器加速的矩量法求解过程。
Firstly, impedance matrix interpolation is incorporated in MoM in combination with the preconditioning technique.
在相同工艺条件下对比评价结果表明，用EPRES技术制备的器外预硫化催化剂的加氢活性比常规器内硫化的同一催化剂好。
The test results showed that hydrotreating activity of ex-situ presulfided catalysts was superior to that of in-situ sulfided catalysts.
在相同工艺条件下对比评价结果表明，用EPRES技术制备的器外预硫化催化剂的加氢活性比常规器内硫化的同一催化剂好。
The test results showed that hydrotreating activity of ex-situ presulfided catalysts was superior to that of in-situ sulfided catalysts.
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