直径
The distance from one side of a circle to the other, passing through the center point. It is a fundamental measurement used in geometry and daily life to describe the size of round objects like plates or pipes.
أمثلة
3 من 5このピザの直径は30センチです。
The diameter of this pizza is 30 centimeters.
太陽の直径は、地球の約109倍です。
The diameter of the sun is approximately 109 times that of the Earth.
ねえ、このボールの直径ってどれくらい?
Hey, what is the diameter of this ball?
عائلة الكلمة
نصيحة للحفظ
The first kanji 直 (choku) means 'straight.' Think of a 'straight' line passing directly through the middle of a circle.
اختبار سريع
円の___は、半径の2倍の長さです。
صحيح!
الإجابة الصحيحة هي: 直径
أمثلة
このピザの直径は30センチです。
everydayThe diameter of this pizza is 30 centimeters.
太陽の直径は、地球の約109倍です。
formalThe diameter of the sun is approximately 109 times that of the Earth.
ねえ、このボールの直径ってどれくらい?
informalHey, what is the diameter of this ball?
円の面積を計算するには、直径ではなく半径が必要です。
academicTo calculate the area of a circle, you need the radius, not the diameter.
このパイプの直径は、規格に合わせて50ミリにしてください。
businessPlease ensure the diameter of this pipe is 50mm according to the standards.
عائلة الكلمة
تلازمات شائعة
العبارات الشائعة
直径に等しい
equal to the diameter
内径と外径
inner diameter and outer diameter
直径の長さ
the length of the diameter
يُخلط عادةً مع
Hankei (radius) is half the distance of the diameter (chokkei).
Enshū (circumference) is the distance around the circle, not across it.
ملاحظات الاستخدام
While commonly used in math, it is also frequently used when buying household items like frying pans, pots, or lightbulbs.
أخطاء شائعة
Learners often confuse 'chokkei' (diameter) with 'hankei' (radius). Also, avoid using 'nagasa' (length) alone when the specific dimension needed is the diameter of a circle.
نصيحة للحفظ
The first kanji 直 (choku) means 'straight.' Think of a 'straight' line passing directly through the middle of a circle.
أصل الكلمة
From the kanji 直 (direct/straight) and 径 (path/diameter). It literally means the 'straight path' through a circle.
أنماط نحوية
السياق الثقافي
In Japan, many household goods are categorized by diameter using the unit 'cm' or 'mm', which is essential for home shopping.
اختبار سريع
円の___は、半径の2倍の長さです。
صحيح!
الإجابة الصحيحة هي: 直径
مفردات ذات صلة
كلمات ذات صلة
協力
A1Cooperation or collaboration where two or more people combine their efforts to achieve a common goal. It is used in both personal and professional settings to describe working together as a team or providing assistance.
提案
A1A suggestion or proposal of a plan or idea for others to consider. It is used in both casual conversations and professional meetings to introduce a potential course of action.
輸出
A1The act of sending goods or services produced in one country to another country for sale or trade. In Japanese, it functions as a noun and a suru-verb, representing the 'exit' of products from a domestic market.
輸入
A1The act of bringing goods, services, or materials into a country from abroad for sale or use. In Japanese, it functions as a noun or can be combined with 'suru' to become a verb meaning 'to import'.
資源
A1Shigen refers to valuable materials or assets, such as natural minerals, energy sources, or human talent, that can be used for production or survival. It is widely used in economics, environmental science, and daily life to describe both raw materials and abstract wealth.
保護
A1The act of keeping someone or something safe from harm, damage, or loss by providing care or creating boundaries. It is a versatile term in Japanese used for social welfare, environmental conservation, and digital security.
観察
A1Observation is the act of watching someone or something carefully in order to gain information or understand a process. It is frequently used in scientific studies, nature analysis, and describing the act of paying close attention to details.
競争
A1Kyousou refers to the act of competing or vying with others to achieve a goal, win a prize, or establish superiority. It is a versatile term used in sports, business, and academics to describe both structured contests and general rivalry.
拡大
A1The act of making something larger in size, scale, or scope. It is frequently used for physical enlargement (like a photo) or abstract growth (like a business or a problem).
製造
A1The process of making or producing goods, typically on a large scale using machinery. It refers specifically to industrial manufacturing rather than making things by hand on a small scale.
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