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User warning: The following module is missing from the file system: imagcache_actions. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1143 of /var/www/html/drupal7/includes/bootstrap.inc).

泡沫傳情 - 科普實驗影片

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◎演示碘化鉀在不同酸鹼環境下,作為催化劑與還原劑的不同。