And at the end of the solid rod is a mirror.
棒子尽头是一面镜子。
This paper compares the property of the hollow rod with that of the solid rod, and conducts case calculation.
将空心抽油杆与实心抽油杆进行了性能对比和实例计算，由此分析出空心抽油杆在螺杆系井中应用的优越性。
A system of material boundaries in the form of a solid dielectric rod or dielectric-filled tubular conductor capable of guiding high-frequency electromagnetic waves.
物质边界装置，形状是一根固体电介质杆或充满电介质的管状导体，能够导引高频电磁波。
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