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['piəriəd]
o kỷ
Phân vị của một nguyên đại.
o chu kỳ
Thời gian kéo dài của một chu trình.
o giai đoạn, thời kì, thời gian, chu kỳ, kỷ
§ anorgenic period : thời kì không chuyển động tạo núi
§ Carboniferous period : kỷ Cacbon
§ chalk period : kỷ Creta
§ cycle period : chu kỳ tuần hoàn
§ delay period : chu kỳ trễ
§ exploratory period : chu kỳ thăm dò
§ filling period : thời kỳ nạp rót
§ geocratic period : chu kỳ chuyển động quả đất
§ glacial period : thời kỳ đóng băng
§ Gothlandian period : kỳ Gothlađi
§ heating period : thời kỳ nóng lên
§ idle period : thời kỳ rỗi, chu kỳ không tải
§ impulse period : chu kỳ xung
§ incubation period : thời kỳ giữ trong tủ nhiệt
§ induction period : thời kỳ cảm ứng
§ initial development period : thời kỳ phát triển khởi đầu
§ interglacial period : thời kỳ giữa băng hà
§ jurassic period : kỷ Jura
§ natural period : chu kỳ dao động tự có tần suất tự nhiên
§ observation period : giai đoạn quan sát
§ ordovician period : kỷ Ocđovic
§ orogenetic period : thời kỳ tạo núi
§ pay back period : thời kỳ hoàn vốn
§ production period : giai đoạn sản xuất
§ quaternary period : kỷ Thứ tư
§ reaction period : giai đoạn phản tác dụng
§ valve period : thì của xuppap, chu kỳ van
§ period of oscillation : chu kỳ dao động
PERIOD
Xem POLICY PERIODPeriod
Hiệp
Xem thêm: time period, period of time, historic period, historical period, menstruation, menses, menstruum, catamenia, flow, point, full stop, stop, full point, geological period
period noun
1 length of time
ADJ. extended, lengthy, long, prolonged | brief, limited, short The offer is only available for a limited period. | full You have been paid for the full period of your employment with us. | fixed, set The medication is prescribed for a fixed period of time. | indefinite | early, late the late Victorian period | happy a happy period in her life | dark, difficult, lean a dark period in the country's history | critical a critical period in the development of the project | interim, intervening | transitional | off-peak, peak | Christmas | medieval, Tudor, etc. | inter-war, post-war | accounting | cooling-off The customer has the right to cancel the contract during the seven-day cooling-off period. | formative The most formative period of life is childhood. | gestation, incubation | rest | training | waiting | trial You can use the software free for a 30-day trial period. | time
VERB + PERIOD cover the period covered by the book
PERIOD + VERB begin, commence | end | last
PERIOD + NOUN costume, furniture
PREP. after a ~ after a long period of waiting | during/throughout the ~ during the intervening period | for a ~ We lived in Caracas for a brief period. | in/within a/the ~ Sales have gone up in the last-five-year period. | over a/the ~ There will be a reduced bus service over the Christmas period. Changes were monitored over a period of two months. | within a/the ~ Committee members will not be eligible for re-election within a period of two years. | ~ between the period between his resigning and finding a new job | ~ from … to … the period from 1 July to 31 December
PHRASES the beginning/end/start of a period, a period of history, sb's period of office Public spending was cut during his period of office. | a period of study Try breaking your period of study into 20-minute blocks. | a period of time The balance must be paid within an agreed period of time. | a period of transition a period of transition between communist rule and democratic government
2 menstruation
ADJ. heavy, light | menstrual | monthly
VERB + PERIOD have I've got my period and don't feel too great. | start I was thirteen when I started my periods.
PERIOD + VERB start | stop | last
PERIOD + NOUN pains
n.
a time period of 30 years
hastened the period of time of his recovery
Picasso's blue period
a novel from the Victorian period
in England they call a period a stop
ganoid fishes swarmed during the earlier geological periods
death put a period to his endeavors
a change soon put a period to my tranquility