飛行的四種力

<span style="-webkit-text-stroke-width:0px; background-color:rgb(255, 255, 255); color:rgb(29, 33, 41); display:inline !important; float:none; font-family:helvetica,arial,sans-serif; font-size:15px; font-style:normal; font-variant:normal; font-weight:normal; letter-spacing:normal; line-height:18px; orphans:auto; text-align:left; text-indent:0px; text-transform:none; white-space:normal; widows:1; word-spacing:0px">飛行的四種力 <span style="-webkit-text-stroke-width:0px; background-color:rgb(255, 255, 255); color:rgb(29, 33, 41); display:inline !important; float:none; font-family:helvetica,arial,sans-serif; font-size:15px; font-style:normal; font-variant:normal; font-weight:normal; letter-spacing:normal; line-height:18px; orphans:auto; text-align:left; text-indent:0px; text-transform:none; white-space:normal; widows:1; word-spacing:0px">升力是向上的力，維持飛機在空中飛行。 <span style="-webkit-text-stroke-width:0px; background-color:rgb(255, 255, 255); color:rgb(29, 33, 41); display:inline !important; float:none; font-family:helvetica,arial,sans-serif; font-size:15px; font-style:normal; font-variant:normal; font-weight:normal; letter-spacing:normal; line-height:18px; orphans:auto; text-align:left; text-indent:0px; text-transform:none; white-space:normal; widows:1; word-spacing:0px">重力是飛機本身的重量加上承載的內容物。 <span style="-webkit-text-stroke-width:0px; background-color:rgb(255, 255, 255); color:rgb(29, 33, 41); display:inline !important; float:none; font-family:helvetica,arial,sans-serif; font-size:15px; font-style:normal; font-variant:normal; font-weight:normal; letter-spacing:normal; line-height:18px; orphans:auto; text-align:left; text-indent:0px; text-transform:none; white-space:normal; widows:1; word-spacing:0px">推力是透過引擎將空氣向後推所產生的作用力。 <span style="-webkit-text-stroke-width:0px; background-color:rgb(255, 255, 255); color:rgb(29, 33, 41); display:inline !important; float:none; font-family:helvetica,arial,sans-serif; font-size:15px; font-style:normal; font-variant:normal; font-weight:normal; letter-spacing:normal; line-height:18px; orphans:auto; text-align:left; text-indent:0px; text-transform:none; white-space:normal; widows:1; word-spacing:0px">阻力是物體在流體中相對運動所產生與運動方向相反的力。 <a href="http://www.apexflightacademy.com/" rel="nofollow nofollow" style="color: rgb(54, 88, 153); cursor: pointer; text-decoration: none; font-family: helvetica, arial, sans-serif; font-size: 15px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 18px; orphans: auto; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" target="_blank"> http:// www.apexflightacademy.com/

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