有气孔的 meaning in English

porous

Home ultrasonic cleaners are not recommended for all of your colored gemstones . ruby and sapphire are typically safe to clean in an ultrasonic cleaner but other gemstones are not
亚摩尼亚对大多数宝石都是安全的，但对珠宝和有气孔的宝石如松石等则便外。
The directional of microphone : the unidirectional and the noise canceling microphone have vents at the bottom ; oppositely , the omnidirectional microphone is completely sealed
麦克风指向性:麦克风背有有气孔的,就是有指向性或抗噪型的麦克风,完全密封的,就是全指向的麦克风