The bottom of the disc is made of knife-shaped gate with a cut off function of the medium. When gate is closed, oblique plane of gate valve encounters wedge block of gate to achieve sealing effect.
闸板底部做成刀形斜面具有切断介质功能，而且闸板关闭时通过阀体上的锲块紧靠闸板斜切面使得闸板紧紧贴靠阀座密封面，从而起到了密封效果。
But all this stuff, these cross sections are measured as a function of energy, they're measure as a function of the neutron energy which is a function of the temperature of the particular medium.
但是，所有这个材料，这些横截面被测量的，是以能量的函数，它们是测量，中子能量的函数，那也是特定的媒介的，温度的函数。
The control which designers know in the print medium, and often desire in the web medium, is simply a function of the limitation of the printed page.
我们在印刷中获得的控制力事实上是一种缺陷，不应再继承到 Web 设计中。
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