Objective: To compare the effect of Clinical indication of the detached foundry metal pile nuclear crown and whorl mercurymetal pile nuclear crown in the reparation of the molar.
前言：目的比较分体式铸造金属桩核冠和螺纹金属桩银汞核冠修复磨牙的临床适应症与修复效果。
2
Mercury is a liquid metal, and Mercury, the planet, is the fastest moving heavenly body that naked eyes can see.
水银是液态金属，行星水星是肉眼能看到的运动最快的天体。
3
Mercury is a liquid metal, and mercury, the planet, is the fastest moving naked eye heavenly body. Mars, why is Mars red?