不同纬度海平面的重力加速度和秒摆的长度
<p><TABLE borderColor=#202380 height=734 cellSpacing=1 cellPadding=7 width="84%" align=center border=1><TBODY><TR><TD vAlign=top align=middle width="19%" bgColor=#c0c0c0 height=35><STRONG>地 名</STRONG></TD><TD vAlign=top align=middle width="20%" bgColor=#c0c0c0 height=35><STRONG>北 纬</STRONG></TD><TD vAlign=top align=middle width="20%" bgColor=#c0c0c0 height=35><STRONG>东 经</STRONG></TD><TD vAlign=top align=middle width="20%" bgColor=#c0c0c0 height=35><STRONG>高出地面h/m</STRONG></TD><TD vAlign=top align=middle width="20%" bgColor=#c0c0c0 height=35><STRONG>g/cm.s<SUP>-2</SUP></STRONG></TD></TR><TR><TD vAlign=top align=middle width="19%" height=16>北 级</TD><TD vAlign=top align=middle width="20%" height=16>90o00'</TD><TD vAlign=top align=middle width="20%" height=16></TD><TD vAlign=top align=middle width="20%" height=16>0</TD><TD vAlign=top align=middle width="20%" height=16>983.22</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>圣彼得堡</TD><TD class=9p vAlign=top align=middle width="20%" height=16>59o56.5'</TD><TD vAlign=top align=middle width="20%" height=16>30o18.1'</TD><TD vAlign=top align=middle width="20%" height=16>6</TD><TD vAlign=top align=middle width="20%" height=16>981.93</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>莫斯科</TD><TD class=9p vAlign=top align=middle width="20%" height=16>55o45.3'</TD><TD vAlign=top align=middle width="20%" height=16>37o34.3</TD><TD vAlign=top align=middle width="20%" height=16>139</TD><TD vAlign=top align=middle width="20%" height=16>981.56</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>柏 林</TD><TD class=9p vAlign=top align=middle width="20%" height=16>52o31'</TD><TD vAlign=top align=middle width="20%" height=16>13o19'</TD><TD vAlign=top align=middle width="20%" height=16>30</TD><TD vAlign=top align=middle width="20%" height=16>981.28</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>伦 敦</TD><TD class=9p vAlign=top align=middle width="20%" height=16>51o31.1'</TD><TD vAlign=top align=middle width="20%" height=16>-0o06'</TD><TD vAlign=top align=middle width="20%" height=16>30</TD><TD vAlign=top align=middle width="20%" height=16>981.20</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>巴 黎</TD><TD class=9p vAlign=top align=middle width="20%" height=16>48o50.2'</TD><TD vAlign=top align=middle width="20%" height=16>2o20.2'</TD><TD vAlign=top align=middle width="20%" height=16>61</TD><TD vAlign=top align=middle width="20%" height=16>980.94</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>波士顿</TD><TD class=9p vAlign=top align=middle width="20%" height=16>42o21.5'</TD><TD vAlign=top align=middle width="20%" height=16>-71o03.8'</TD><TD vAlign=top align=middle width="20%" height=16>22</TD><TD vAlign=top align=middle width="20%" height=16>980.40</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>罗 马</TD><TD class=9p vAlign=top align=middle width="20%" height=16>41o54.0'</TD><TD vAlign=top align=middle width="20%" height=16>12o29.5'</TD><TD vAlign=top align=middle width="20%" height=16>59</TD><TD vAlign=top align=middle width="20%" height=16>980.35</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>芝加哥</TD><TD class=9p vAlign=top align=middle width="20%" height=16>41o50.0'</TD><TD vAlign=top align=middle width="20%" height=16>-87o36.8'</TD><TD vAlign=top align=middle width="20%" height=16>182</TD><TD vAlign=top align=middle width="20%" height=16>980.28</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>纽 约</TD><TD class=9p vAlign=top align=middle width="20%" height=16>40o48.5'</TD><TD vAlign=top align=middle width="20%" height=16>-73o57.5'</TD><TD vAlign=top align=middle width="20%" height=16>38</TD><TD vAlign=top align=middle width="20%" height=16>980.25</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>北 京</TD><TD class=9p vAlign=top align=middle width="20%" height=16>39o55.8'</TD><TD vAlign=top align=middle width="20%" height=16>116o23.7'</TD><TD vAlign=top align=middle width="20%" height=16>46</TD><TD vAlign=top align=middle width="20%" height=16>980.12</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>旧金山</TD><TD class=9p vAlign=top align=middle width="20%" height=16>37o47.5'</TD><TD vAlign=top align=middle width="20%" height=16>-112o25.7'</TD><TD vAlign=top align=middle width="20%" height=16>114</TD><TD vAlign=top align=middle width="20%" height=16>979.96</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>东 京</TD><TD class=9p vAlign=top align=middle width="20%" height=16>35o42.0'</TD><TD vAlign=top align=middle width="20%" height=16>139o46.0'</TD><TD vAlign=top align=middle width="20%" height=16>18</TD><TD vAlign=top align=middle width="20%" height=16>979.80</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>南 京</TD><TD class=9p vAlign=top align=middle width="20%" height=16>32o03.6'</TD><TD vAlign=top align=middle width="20%" height=16>118o45'</TD><TD vAlign=top align=middle width="20%" height=16>270</TD><TD vAlign=top align=middle width="20%" height=16>979.44</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=-12>上 海</TD><TD class=9p vAlign=top align=middle width="20%" height=16>31o11.5'</TD><TD vAlign=top align=middle width="20%" height=-12>121o25.7'</TD><TD vAlign=top align=middle width="20%" height=-12>7</TD><TD vAlign=top align=middle width="20%" height=-12>979.44</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=15>广 州</TD><TD class=9p vAlign=top align=middle width="20%" height=-12>23o00'</TD><TD vAlign=top align=middle width="20%" height=15>112o19'</TD><TD vAlign=top align=middle width="20%" height=15>13</TD><TD vAlign=top align=middle width="20%" height=15>978.83</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>马尼拉</TD><TD class=9p vAlign=top align=middle width="20%" height=16>14o35.4'</TD><TD vAlign=top align=middle width="20%" height=16>120o57.5'</TD><TD vAlign=top align=middle width="20%" height=16>3</TD><TD vAlign=top align=middle width="20%" height=16>978.36</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>新加坡</TD><TD class=9p vAlign=top align=middle width="20%" height=16>1o17.3'</TD><TD vAlign=top align=middle width="20%" height=16>103o51.2'</TD><TD vAlign=top align=middle width="20%" height=16>8</TD><TD vAlign=top align=middle width="20%" height=16>978.07</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=17>赤 道</TD><TD class=9p vAlign=top align=middle width="20%" height=17>00o00'</TD><TD vAlign=top align=middle width="20%" height=17>....</TD><TD vAlign=top align=middle width="20%" height=17>0</TD><TD vAlign=top align=middle width="20%" height=16>978.04</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>墨尔本</TD><TD class=9p vAlign=top align=middle width="20%" height=16>-37o49.9'</TD><TD vAlign=top align=middle width="20%" height=16>144o58.5'</TD><TD vAlign=top align=middle width="20%" height=16>26</TD><TD vAlign=top align=middle width="20%" height=16>979.99</TD></TR><TR><TD class=9p vAlign=top align=middle width="19%" height=16>南 极</TD><TD class=9p vAlign=top align=middle width="20%" height=16>-90o00'</TD><TD vAlign=top align=middle width="20%" height=16>....</TD><TD vAlign=top align=middle width="20%" height=16>0</TD><TD vAlign=top align=middle width="20%" height=16>983.22</TD></TR></TBODY></TABLE></CENTER></p>
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