钠冷阱 sodium cold trap

[名词解释] 钠热阱 sodium hot trap

[名词解释] 通量阱 flux trap

[名词解释] 冷脓肿(cold abscess)

[名词解释] 冷链（cold chain）

[名词解释] 冷停堆 cold shutdown

[单选题]钎焊时，冷阱安装在（）。A . 扩散泵与真空阀之间B . 机械泵与真空阀之间C . 增压泵与真空阀之间

[名词解释] 冷态试验 cold functional test

[名词解释] 维修冷停堆 maintenance cold shutdown

[名词解释] 正常冷停堆 normal cold shutdown

[单选题]E．mulsion oils and sodium nitrite are both approved additives, but the latter cannot be used if any pipes are or if ally soldered joints exit.A．chromedB．weldedC．galvanizedD．bolted