RecVolume(double l,double w,double h) {this->l=l;this->w=w;this->h=h;}里的this是干吗的,

RecVolume(double l,double w,double h) {this->l=l;this->w=w;this->h=h;}里的this是干吗的, double d 5.14 有句C语言看不懂double f (double a, double b, double c,double d, double x) Private Sub Command1_Click() Dim i As Double,M As Double,L As Double,E As Double,K As Double,P 字母w怎么读 读“达布留”还是double u 音标['d?b(?)lju:] 中的l是跟在前面读成double 还是跟在后面读留 007是不是这样叫double zero seven连读了 double 的l音与o连在一起了 请发下英标过来 要连起来读的那个英标 不要double:[ 'd C语言一个函数后面能跟俩括号吗?如:func(int i)(double d,long l) how do you spell apple?A-( )-p-L-E,apple.A、 two b、double C、one D、 / 两个经纬度算距离class Earth{private const double EARTH_RADIUS = 6378.137;//地球半径private static double Rad(double d){return d * Math.PI / 180.0;}public static double GetDistance(double lat1,double lng1,double lat2,double lng2){double ra 一下程序中area的意思public static double distance(Point p,Line l) {Point pA = l.getPoint()[0];Point pB = l.getPoint()[1];double d = distance(pA,pB);double a = area(p,pA,pB);return 2 * a / d;} int b(double l,double r) { double a; aint b(double l,double r){double a;a=(l+r)/2;if(a*a-6>0) b(l,a);else if(a*a-6 double double double double double double double