The students are ___ observing the movement of an object. A. carefully B. carelessly C. quickly D. slowly 相关知识点: 试题来源: 解析 A。解析:carefully 表示仔细地;carelessly 表示粗心地;quickly 表示快速地;slowly 表示慢慢地。根据前文说他们仔细观察物体的运动可知答案是 carefully。
The movement of an object in the plane is defined by x(t)=ln t, y(t)=t^2. Find the speed of the object at the moment when the acceleration is a(t)=(-1,2). 相关知识点: 试题来源: 解析 √ 5 x'(t)= 1t, x''(t)= (-1)(t^2), y'(t)=2t, y''(t)=2. The a...
A METHOD TO MEASURE A MOVEMENT OF AN OBJECTThomas OLSSON
M. Spaan,Johannes A. Soons,Helena M. De Ruiter 被引量: 39 摘要: The accuracy of an apparatus for the movement of an object is increased by means of compensating for geometric errors and load and temperature induced deformations. The effects of the errors and deformations are stored in ...
DEVICE FOR PRODUCING IMAGES OF AN OBJECT, AND IN PARTICULAR FOR OBSERVING THE REAR REGION OF THE EYE The disclosed device comprises an illumination unit (21, 22) whose light is focused on the object to be represented, and which preferably has at least one laser, a scanning unit which produc...
I used to restrict the movement of an object to a straight path by holding the shift key, but now that does not work. Do I need to change a setting?Views 317 Translate Translate Report Report More Reply Sorry, unable to complete the action you requested. 1...
The optical recognition system is used to determine the position and/or the movement of an object (3), for example a hollow spherical element for supporting an electronic device (4), on a positioning device (2). The positioning device comprises means (20, 21, 22) for making the object ro...
Device suitable for detecting changes of the state of rest or of rectilinear uniform motion of a body, composed of a hollow member (1) rigidly joined to said body and containing one or more mobile elements (2), of suitable means (7) for emitting ultra-sounds of a determinate frequency int...
A signal conditioning arrangement modifies the electrical signals to generate an average signal correlated to the sound waves which in turn is correlated to a physical or metallurgical property of the object, such as temperature, which property may then be used to control the process. External, ...
DEVICE FOR THE AUTOMATIC AND INSTANT DETECTION OF MOVEMENT OF AN OBJECT Device (28) comprising an object accommodating system (1) comprising two flaps (2, 3) that define between one another an accommodating space (4) and bear a... J Witczak 被引量: 0发表: 2022年 Movement Detection and ...