Electron withdrawing groups can enhance the limiting effect for this kind of complexes, but the effect of heavy atom ACTS opposite role.

吸电子基团能增强该类配合物对皮秒激光的限幅效果，而重原子效应则起相反的作用。

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In this paper a new procedure is proposed to make full use of the heavy atom information and make the combination between heavy atom method and direct method more efficient.

本文提出一种利用重原子信息的新方法。这个方法能够更充分地利用重原子信息，并能使重原子法同直接法更有效地结合起来。

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However the existing methods of solving difference structures have not yet made full use of the angular parts of the heavy-atom contribution.

目前求解差值结构的各种方法均未充分利用重原子给出的相位信息。

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By tuning the laser very precisely to the frequency of one particular sort of bond (such as that with a heavy carbon atom at one end), a molecule containing that bond can be shaken up.

ECONOMIST: Diamonds

Light ones are more easily deflected than heavy ones, so the two forms of carbon get separated, and when each atom reaches a detector at its expected arrival spot, it can be counted.

ECONOMIST: Monitor