The paper also gives the range of stability of key block of voussoir beam and measures to be taken in various conditions.
文中还给出了“砌体梁”关键块体结构的稳定范围及在各种条件下应采取的相应措施。
Quartz resonator is a key part of the quartz vibrating beam accelerometer.
石英谐振器是石英振梁式加速度计的关键部件。
Image processing is one of the key techniques in laser beam automatic alignment.
图像处理是光路自动准直的关键技术之一。
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