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璐靛窞闀�閿岄挗綆℃瘡綾崇悊璁洪噸閲忕殑璁＄畻
鏉ユ簮錛?a href='http://www.hkreg.cn/news/53.html'>http://www.hkreg.cn/news/53.html鍙戝竷鏃墮棿錛?017-09-20
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4 * 鍘氬害 *錛堣竟闀?鍘氬害錛? 0.00785鍏朵腑錛岃竟闀垮拰澹佸帤閮戒互姣背錛坢m錛変負(fù)鍗曚綅錛岀洿鎺ユ妸鏁板�間唬鍏ヤ笂榪板叕寮忥紝寰楀嚭鍗充負(fù)姣忕背鏂圭鐨勯噸閲忥紝浠ュ崈鍏嬩負(fù)鍗曚綅銆?/span>濡?0 x 30 x 2.5姣背鐨勬柟綆★紝鎸変笂榪板叕寮忓嵆鍙畻鍑哄叾姣忕背閲嶉噺涓猴細(xì)4 x 2.5 x (30-2.5) x 7.85=275 x 7.85=2158.75鍏嬶紝鍗崇害2.16鍏枻銆?/span>褰撳鍘氬拰杈歸暱閮戒互姣背涓哄崟浣嶆椂錛? x澹佸帤x (杈歸暱-澹佸帤)綆楀嚭鐨勬槸姣忕背闀垮害鏂圭鐨勪綋縐紝浠ョ珛鏂瑰帢綾籌紙cm3錛変負(fù)鍗曚綅錛屽啀涔樹互閾佺殑姣旈噸姣忕珛鏂瑰帢綾?.85鍏嬶紝寰楀嚭鍗充負(fù)姣忕背鏂圭浠ュ崈鍏嬩負(fù)鍗曚綅鐨勯噸閲忋�?/span>
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