. da tian zuo wu yu zhong xue yu zhong zi fan yu xue shi xi zhi dao. botany. 372 ç§å-ç¹è²å-¦ ç§åç½ç²æ¥æ§åç§çç§å-éç¨ç溶液ãç¶è¿15åéåæ溶 液ä»å¹å »ç¿ä¸-ååºï¼èç±½ç²åç¨è¢«éæ ·çé 溶液å®å ¨æµ¸æ¹¿äºç濾 ç´çä¸ã为äºæ´å¿«å°æè²ï¼å¯ä»¥ä½¿ç±½ç²å¤äºé«æº«çæä¹ä¸(30- 4(r)ï¼æè å¨é 溶液ä¸-å ä¸æ°¨æº¶æ¶²ï¼100毫åé 溶液ä¸-å 100æ»´æ°¨ åå¨100毫åä¸-å 50 æ»´)ãå¨é 溶液ä¸-浸 湿åï¼ç¶è¿2å°æ¶æª¢ æ»ç¡¬ç²å°éº¦ç±½ç²çé¡ è²ï¼å¬æ§åç§åç½ç² æ¥æ§åç§ä¸ç¶è¿1 å°æ¶ï¼ç´ ç²æ¥æ§åç§ ââç¶é30åéã å½æ¿æ»æ ·åæ¶ï¼è¨ç®å ·æå ¶ä»é¡è²çç±½ç²æ°ï¼æè¬å ¶ä»é¡è²ç³»æä¸ åäºè¢«åæåç§çé¡è²èè¨ãç¶åï¼ç®åºå ©ä¸ªæ ·åçå¹³åæ°å对 æ ·åç±½ç²æ»æ°çæ··æç¾


. da tian zuo wu yu zhong xue yu zhong zi fan yu xue shi xi zhi dao. botany. 372 ç§å-ç¹è²å-¦ ç§åç½ç²æ¥æ§åç§çç§å-éç¨ç溶液ãç¶è¿15åéåæ溶 液ä»å¹å »ç¿ä¸-ååºï¼èç±½ç²åç¨è¢«éæ ·çé 溶液å®å ¨æµ¸æ¹¿äºç濾 ç´çä¸ã为äºæ´å¿«å°æè²ï¼å¯ä»¥ä½¿ç±½ç²å¤äºé«æº«çæä¹ä¸(30- 4(r)ï¼æè å¨é 溶液ä¸-å ä¸æ°¨æº¶æ¶²ï¼100毫åé 溶液ä¸-å 100æ»´æ°¨ åå¨100毫åä¸-å 50 æ»´)ãå¨é 溶液ä¸-浸 湿åï¼ç¶è¿2å°æ¶æª¢ æ»ç¡¬ç²å°éº¦ç±½ç²çé¡ è²ï¼å¬æ§åç§åç½ç² æ¥æ§åç§ä¸ç¶è¿1 å°æ¶ï¼ç´ ç²æ¥æ§åç§ ââç¶é30åéã å½æ¿æ»æ ·åæ¶ï¼è¨ç®å ·æå ¶ä»é¡è²çç±½ç²æ°ï¼æè¬å ¶ä»é¡è²ç³»æä¸ åäºè¢«åæåç§çé¡è²èè¨ãç¶åï¼ç®åºå ©ä¸ªæ ·åçå¹³åæ°å对 æ ·åç±½ç²æ»æ°çæ··æç¾åæ¯ã è¨ç®è¿åï¼æ被åæçç±½ç²çå°ä¸ä¸å¤©ãå°è¿æ¶åé¡è²å¯è½ æ´å æ¾èï¼ä½¿å¾è½è¾¨èªåºæ··æç©æ¯ç±å¤å°ä¸ªåç§æ§æçãå¹·ææ è·å¾çææå¡¡å ¥è¡¨ä¸-(表159)ã §gãç麦åç§çåææ¹æ³ä¸å°éº¦ç¸åï¼å ¶ä¸åå¤ä» å¨äºï¼ä¸º äºè¿^æåç¨å ©ä¸ªæ ·åï¼å®åçç±½ç²æ°ä¸º500,æåè¨ç®æè²ç ç±½ç²æ¯å¨æµ¸æ¹¿åç¶è¿4个å°æ¶ã对ç麦å©ç¨è¿æ¹æ³ï¼ä½¿å¾è½æ ¹æ® ç±½ç²åºå¥åºå±¬äºåä¸åç§æåä¸ç±»åçå个åç§ï¼ä¾å¦ï¼åºå¥åºå æ®åèå©:åç§åæ®çç±½ç²è¢«ææè¤è²ï¼èåç§èå©çç±½ç²åä¸ç è²ã ä¹æå¯è½å¨ç¨æ·å¤çåæ ¹æ®ç±½ç²çé¡è²æ¥åºå¥ä¸ååç§ï¼é é¨åèµæï¼åé86/5åèå人åå ¶ä»ã é»éº¦ãä»åç§çå¹³å


Size: 2475px × 1010px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectbotany