If a figure is symmetrical about the x-axis, then the y-coordinates of the corresponding points ___. A. are the same B. are opposite C. multiply by -1 D. add up to 0 相关知识点: 试题来源: 解析 B。本题考查关于 x 轴对称的图形的性质。如果一个图形关于 x 轴对称,那么对应点的纵坐...
plane symmetrical to the central axis arranged with multiple jet engines.DORNIER DIPL-ING SILVIUS
11( Given that point A(a, b) and point B are symmetrical with respect to the r-axis, and point B and point C(3, 4) are symmetrical with respect to the y-axis, then(1) find the coordinates of point A.(2)how are the positions of point A and point C related to each other?
equalise the torque. The brake is symmetrical to the axis of the bell and integral with the carrier saddle of the yoke mounting, and rocks back and forth when the bell is tolled; its brake disc is attached to the yoke. The braking force can be regulated by means of the spring and ...
EM wave applied along the positive z-axis. The proposed design has been simulated in computer simulation technology microwave studio (CST MWS). To attain accurate values, a frequency-domain solver has been used. Evaluation of the patch and parametric analysis for absorption property is discussed ...
Which of the following lines are used to express axis lines, symmetrical center lines, and crossed center lines of circles? A. Thin phantom lines B. Thin solid lines C. Thin center lines D. Wavy lines 你可能感兴趣的试题 单项选择题
aThe orientation of a rotation-symmetrical tool is programmed with the first two orientation coordinates phi and theta.They define an orientation vector O of length 1 is defined which specifies the orientation-in relation to the program coordinate system-along the tool length axis to the tool holde...
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The living environment of bone cells is a complex curved one. And based on the modeling method of triply periodic minimal surfaces (TPMS) can be used to design a variety of complex surface structures, so it has been more and more widely studied and applied. In this paper, the main resear...
A model the magnetic fields in turbo- generators with either symmetrical or asymmetrical rotor has been developed, and mathematically described and solutions obtained using the digital computer. The model was developed specifically for use in the design stage. It is applied to the entire cross-sectio...