黑电平 baack level ; Bias
黑电平扩展 BLACKSTRECH ; BALCK STR ; BLACKS
黑电气石 [矿物] schorl ; [矿物] aphrizite ; aphriza ; RFe
黑电平扩展点 BLACK STRETCH POINT
自动黑电平 automatic black level ; Auto Black
自动黑电平电路 automatic black level circuit ; automatic c black level circuit
黑电平偏移 black level shift
自动黑电平控制 automatic black level control ; automatic c black level control
黑电平测试信号 artificial black signal
黑电木 Vulcanite
通过试验，发现新型干电池的性能不比现行电池性能差，许多方面已超过乙炔黑电芯干电池。
It has been found by experiment that the performances of new-type dry battery were not inferior to ones of present battery, which has advantages over acetylene black in many aspects.
在1910年和1920年，许多人“黑”掉水晶套，从而利用无线电的新高科技世界。
In the 1910's and 1920's many people "hacked" on crystal sets to take advantage of the new high tech world of radio.
本文介绍电校准辐射计的锥腔形黑涂层反射比的测量原理、装置、方法以及测量结果。
This paper describes the principle, equipments, method and results in the measurement of reflectance of black coating in the electrically calibrated conical cavity radiometer.
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