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## 以 t 开头的数学词汇

2012-10-08
table   表，表格 An arrangement of information or data into columns and rows or a condensed list.

tangent   正切；切线

• For a given angle in a right-angled triangle, a trigonometric function equal to the length of the side opposite the angle divided by the length of the adjacent side.
• Let P be a point on a curve, the tangent to the curve at P is the line through P that touches the curve at P, but never cross or intersect the curve.

tangram   七巧板 A Chinese puzzle consisting of a square cut into five triangles, a square, and a rhomboid, to be reassembled into different figures. temperature   温度 A measure of the warmth or coldness of an object or substance with reference to some standard value.

tenth   第十；十分之一

• The ordinal number matching the number ten in a series.
• One of ten equal parts.

term   项 Each of the members of which a mathematical expression, a series of quantities, or the composed.

terminating decimal   有限小数 A decimal that has only a finite number of nonzero digits to the right of the decimal point. Also known as finite decimal.

tetrahedron   四面体 A solid figure having four plane faces. A regular tetrahedron has faces that are equilateral triangles.

theorem   定理，法则 A proposition, statement, that has been or is to be proved on the basis of explicit assumptions.

thermometer   温度计 An instrument for measuring temperature, especially one having a graduated glass tube with a bulb containing a liquid, typically mercury or colored alcohol, that expands and rises in the tube as the temperature increases.

thousand   千

• The number 1,000.
• The fourth digit to the left of the decimal point in the decimal number system.

three-dimensional   三维，立体 Existing in three dimensions, possessing or appearing to possess the dimensions of height, width, and depth.

thrice   三次 Three times.

time   时间

• The system of those sequential relations that any event has to any other, as past, present, or future; indefinite and continuous duration regarded as that in which events succeed one another.
• Duration regarded as belonging to the present life as distinct from the life to come or from eternity; finite duration.
• A system or method of measuring or reckoning the passage of time: mean time; apparent time; Greenwich Time.

time line   时间线

• A schedule, timetable: a plan of when something should happen or how much time something should take.
• A line showing particular dates over a period of time.

time value of money   资金的时间价值 Describes the greater benefit of receiving money now rather than later. It explains why interest is paid or earned: Interest, whether it is on a bank deposit or debt, compensates the depositor or lender for the time value of money.

times tables   乘法表 A table, used as an aid in memorization, that lists the products of certain numbers multiplied together, typically the numbers 1 to 12.

timetable   时间表 A schedule listing the times at which certain events, such as arrivals and departures at a transportation station, are expected to take place.

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