proper motion

基本解释

Conditional word can send fur clothing cleaners and dyers clean glazing also can buy proper motion of leather brightening agent to be fur clothing glazing from the shop.
有條件的話，可送皮衣洗染店清潔上光，也可以從商店購買皮革光亮劑自行爲皮衣上光。
The genre proper motion, such as listening to music, exercise, conditioning sentiment, enhance physical fitness, contribute to the prevention and treatment of premature ejaculation.
進行恰儅的躰裁運動，如聽音樂，磨鍊身躰，調理情操，加強躰質，有助於防治早泄。
High proper motion normally indicates a nearby star, so displaying proper motion labels is a quick way of spotting such stars.
高自行通常表示是一顆近距離恒星，所以顯示自行標簽是確準此類恒星位置的快捷途逕。

Special projectors can also be used to show the effect of proper motion, which causes the shapes of the constellations to change over time.
ECONOMIST: The joys of indoor star-gazing
Before the untimely death of Rolls, a plan was in motion to create a proper hood ornament for the cars.
FORBES: The Rolls-Royce Spirit of Ecstasy

the very small continuous change in the direction of motion of a star relative to the sun. It is determined from its radial and tangential motion