采用多步反应法，还可控制粒子的大小，并保持粒子外形的各向异性不变。
By adopting multi step reaction, the particle's size can be desirably controlled and the anisotropy of the particle's shape can also be kept.
对药物的释放速度可通过改变控制粒子的大小，树脂交联的程度及树脂的化学性质。
The rate of release of drugs can be controlled by varying the particle size, degree of cross-linking and the chemistry of resin.
只要恰当地控制粒子束的照射时间，该恒星将有效地成为一台调频电台——以“造父变星”的脉冲为基础载波向宇宙广播。
Time the beam right and the star could be turned, in effect, into an FM transmitter-broadcasting to the universe on the underlying carrier-wave of the Cepheid's pulsation.
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