poor penetration 中文意思是什麼
poor penetration
解釋
滲透不良- poor : adj 1 窮，貧窮的 （opp rich wealthy）。2 （收獲）少，差，不夠。3 （衣裳）破舊的，不體面的；卑劣的...
- penetration : n. 1. 浸透；透過；滲透力。2. 侵入，【軍事】突破；（空戰中）深入敵方的飛行。3. 貫穿；（炮的）貫穿力；（光學機械的）透視力。4. 看破，洞察（力），眼光。
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Conventional building - mortar is usually blent into in the construction local, which possesses many defects such as low accuracy of mixture ratio, poor stability of quality, contractility of bigness, broad fluctuation of felted strength, anti - penetrability of feebleness, collapse of easiness and ect, and it is vital reason, resulting in lots of engineering quality accidents as following : crack in the wall, swelling, penetration, and collapse. mortar made in the local is at the cost of wasting materials and contaminating environment
傳統的建築砂漿都是在施工現場拌制，現場拌制的砂漿各組分計量準確度低、質量穩定性差、收縮性大、粘結強度波動大、抗滲性差、易剝落，是建築工程墻面開裂、起殼、滲漏、甚至墻體倒塌等質量事故發生的主要原因；現場拌制砂漿還會造成材料浪費和污染施工環境。 -
Application and study on gas drainage technique for highly - located bore - holes in poor penetration seam
高位鉆孔抽放瓦斯技術在弱透氣性煤層中的研究及應用
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