upstroke

简明释义

英[ˈʌpˌstrəʊk]美[ˈʌpˌstroʊk]

n. 向上的一击；书写时向上的一笔；[机] 上行程；上行运动

英英释义

单词用法

同义词

反义词

例句

1.Neither sodium valproate nor Verapamil showed any effect on action potential amplitude, overshoot, resting potential and phase o upstroke velocity.

丙戊酸钠和异搏定对动作电位幅度、超射值、静息电位、O期最大除极速度均无明显影响。

2.The peak polished rod load occurs near the bottom of the stroke with the start of the upstroke.

最大光杆负荷发生在上行冲程开始时的冲程底部附近。

3.With the down stroke of a wing during flight, the body moves up, but the subsequent upstroke can counter that force.

用飞行翼的上下行程，身体向上移动，但随后的冲程可以对抗这种力量。

4.The difference in the peak load on the upstroke and the minimum load on the downstroke of a polished rod.

光杆上行冲程时的最大负载与下行冲程时的最小负载之差。

5.For example, birds clap their wings together at the peak of the upstroke during takeoff - that's the clatter of a pigeon taking off in the park - and rotate their wings on the way down to get lift.

例如，鸟儿在起飞上升的顶点合起它们的翅膀——这是公园里鸽子起飞时扑哧的声音——在降落时旋转它们的翅膀以获得升力。

6.According to the belt tension analysis of the large near-horizontal and upstroke conveyor during braking and starting, this paper gives the effects of brake location on the take-up tension.

通过近水平和上运大型带式输送机制动工况和起动工况的张力分析，明确了制动装置位置对输送带张紧力的影响，进而提出大型输送机制动与张紧装置的优化布置方法。

7.For example, birds clap their wings together at the peak of the upstroke during takeoff - that's the clatter of a pigeon taking off in the park - and rotate their wings on the way down to get lift.

例如，鸟儿在起飞上升的顶点合起它们的翅膀——这是公园里鸽子起飞时扑哧的声音——在降落时旋转它们的翅膀以获得升力。

8.The musician emphasized the upstroke in his guitar playing to create a unique rhythm.

这位音乐家在吉他演奏中强调了上行拨弦以创造独特的节奏。

9.During the exercise, focus on the upstroke to engage your upper body muscles.

在锻炼过程中，专注于上行动作以激活你的上半身肌肉。

10.In painting, an upstroke can add texture and depth to the artwork.

在绘画中，上行笔触可以为艺术作品增添质感和深度。

11.In calligraphy, the upstroke is essential for creating elegant letters.

在书法中，上行笔画 对于创造优雅的字母至关重要。

12.The teacher demonstrated how to execute a proper upstroke in cursive writing.

老师演示了如何在草写中正确执行上行笔画。

作文

In the world of calligraphy and handwriting, every stroke counts. Among the various motions that a pen or brush can make, the upstroke (上行笔画) plays a crucial role in defining the elegance and style of the written word. An upstroke is characterized by a movement where the writer lifts the writing instrument from the bottom to the top, creating a thin line that contrasts with the thicker downstrokes that typically follow. This contrast is essential for achieving a balanced and aesthetically pleasing script.The significance of the upstroke extends beyond mere aesthetics; it also influences the overall flow of writing. When practicing calligraphy, mastering the upstroke is fundamental. It requires a delicate touch and control, as too much pressure can lead to a jagged line, while too little can result in an imperceptible mark. Calligraphers often spend hours perfecting this motion, understanding that each upstroke contributes to the harmony of the entire piece.In addition to traditional calligraphy, the concept of the upstroke can be applied to modern handwriting styles. For instance, when learning cursive writing, students are taught to incorporate upstrokes into their letters to create fluid connections between them. The graceful transition from an upstroke to a downstroke allows for a more natural flow, making the writing process smoother and more enjoyable.Interestingly, the upstroke is not only limited to writing. In music notation, the term can also describe a specific motion in conducting. Conductors often use an upstroke to indicate a lift in dynamics or to prepare musicians for an upcoming note. This physical gesture mirrors the principles found in calligraphy: precision, control, and the ability to communicate effectively through movement.Moreover, the importance of the upstroke can be seen in other forms of art, such as painting. Artists often utilize upward strokes to create texture and dimension in their work. By varying the pressure and speed of their brush during an upstroke, they can evoke different emotions and atmospheres within their paintings. This technique highlights the versatility of the upstroke across various creative disciplines.In conclusion, the upstroke (上行笔画) is more than just a simple movement; it embodies a fundamental principle of artistry and expression. Whether in calligraphy, handwriting, music, or painting, the upstroke serves as a bridge between technique and creativity. As we continue to explore the nuances of this motion, we gain a deeper appreciation for the beauty and complexity of written and visual communication. Mastering the upstroke opens doors to new possibilities in artistic expression, allowing individuals to convey their thoughts and emotions with grace and style.