整个激光炬工作区域都在一个大型密闭耐光玻璃罩的保护下。
Yes. The total laser torch working area is covered with a big seal light-proof class cover.
都是放在盒子或有玻璃罩的木质底盒。这两个包装都是很坚固的，能够避免损坏的远距离运输。
Either in shadow boxes or glass domes with a wooden base. Both are archival and are durable enough to ship long distances without damage.
本文对带有圆管形玻璃罩的圆锥面太阳能集热器进行了稳态传热分析。用电子计算机计算了各种情况下的吸收器平衡温度。
A detailed analysis of steady state heat transfer is made in this paper for a conical focusing solar energy collector with a cylindrical glass cover around the absorber.
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