significant advance

Без сомнения -- definitely, undoubtedly; without question; doubtless, without a doubt, beyond a doubt, no doubt

Несомненно являются значительным шагом вперёд-- The solid state switches mentioned by D. are definitely a significant advance in switch technology.

Знать заранее-- The analyst knows in advance the areas in which to expect a significant response.

Позволяет значительно расширить знания о

– I cannot say how glad/pleased/gratified/happy I am – I cannot hope adequately to express – I can scarcely find fitting words – I don't know how else to express – I find it difficult to put into words – Words are not adequate to express – Words cannot/are unable to convey/express my feelings – Words fail me – It affords me deep satisfaction to – I am deeply/very honored – You have done me great honor – I consider myself privileged/I am thankful for the privilege – I feel it a proud privilege – It is a great honor for me to – I have great/much/enormous/vast pride (and/or) pleasure in – It is my pleasant duty to – I welcome this opportunity to/appreciate this opportunity – I wish/desire/want/would wish/would like/intend/rise to – I beg/take leave to/take the liberty to/of – Let me – Permit me – Allow me – May I be allowed/permitted/given leave/granted permission to – If I may be allowed to/If you will allow me to – I think/believe/consider/feel/trust/deem/regard/assume/suppose/presume/take it/surmise/claim/submit/ contend/ hold/affirm/assert/guess/am under the impression that
- I think we all feel/we all will agree/I am sure everyone will agree/I may take it for granted that/No one will dispute
- I must say/am bound to say/feel obliged to/cannot but/cannot fail to/must take this opportunity/occasion to say/cannot but say/would be remiss if I did not say/ express

– I cannot say how glad/pleased/gratified/happy I am – I cannot hope adequately to express – I can scarcely find fitting words – I don't know how else to express – I find it difficult to put into words – Words are not adequate to express – Words cannot/are unable to convey/express my feelings – Words fail me – It affords me deep satisfaction to – I am deeply/very honored – You have done me great honor – I consider myself privileged/I am thankful for the privilege – I feel it a proud privilege – It is a great honor for me to – I have great/much/enormous/vast pride (and/or) pleasure in – It is my pleasant duty to – I welcome this opportunity to/appreciate this opportunity – I wish/desire/want/would wish/would like/intend/rise to – I beg/take leave to/take the liberty to/of – Let me – Permit me – Allow me – May I be allowed/permitted/given leave/granted permission to – If I may be allowed to/If you will allow me to – I think/believe/consider/feel/trust/deem/regard/assume/suppose/presume/take it/surmise/claim/submit/ contend/ hold/affirm/assert/guess/am under the impression that
- I think we all feel/we all will agree/I am sure everyone will agree/I may take it for granted that/No one will dispute
- I must say/am bound to say/feel obliged to/cannot but/cannot fail to/must take this opportunity/occasion to say/cannot but say/would be remiss if I did not say/ express

variation in...
(более или менее постоянное изменение параметра)
- (в инструкции, чертеже) — change to
бюллетень обуславливает необходимость внесения изменений в руководство. — the service bulletin effects а change to manual.
- (к документу, руководству) — revision /modification/ (to маnual)
часть текста, на которую распространяется действие изменения, должна обозначатьея вертикальной чертой на поле страницы. — the portion of the text affooted by the current revision is indicated by a vertical black line along the left-hand margin of the page.
- (конфигурации детали, подгонка) — alteration. parts may be replaced by standard parts without alteration.
- (одномоментное изменение параметра) ' — change in...
- в зависимости от (напр., температуры) — change with changing (temperatures), change versus (temperatures), variation of smth with
-, временное (к документу) — temporary revision
- в составе снаряжения ла — standard item variations (siv)
-, в стандартном снаряжении (самолета) — standard item variations (siv). standard items that the operator adds, deducts, or changes.
- давления в зависимости от оборотов двигателя — pressure variation with rpm. the output pressure will vary with engine rpm.
- комплектации двигателя — engine build-up alteration
-, конструктивное — change in design
- конструкции — change in design
- конструкции (доработка) — modification
- маршрута (курса) — track change
нажать клавишу изм. марш. для изменения маршрута от данного mс до любого ппm. — то fly а track from present position to any out of sequence wpt, press the wypt chg key
wpt chg, wypt chg
- маршрута (при полете по ппм) — waypoint change
- (увеличение величины) на единицу — advance by 1
-, несущественное — insignificant change
-, несущественное (доработка) — minor modification
- отклонений штурвала (колонки) при создании единицы перегрузки по скорости (в горизонтальном полете) — change in displacement of control column with оnп for speed (in level flight condition)
- параметров двигателя (при наборе высоты) — engine parameter change (in climb)
- плана полета на обратный — flight plan reversal
- последовательности прохождения ппм — leg change from present position direct to any other waypoint
- промежуточных пунктов маршрута (ппm) — waypoint change (wpt chg)
- режима работы двигателя — change in engine power
-, скачкообразное — sudden changes (in...)
- скорости (определяемое акселерометром) — velocity change (sensed by accelerometer)
-, срочное (к документации) — temporary revision
-, существенное — significant change
-, существенное (доработка) — major modification
-, текущее — current change
- текста (документации) — rewording

paragraph в is reworded, and para. d is deleted.
- усилий на штурвале (колонке) при создании единицы перегрузки no скорости — change of control column force with "n" for speed
- (переключение) участка маршрута (автоматически или вручную между запрограммированными ппм) — auto or man track change between stored wpts
- центровки (в полете) — center of gravity variation, variations о? center of gravity limits
- центровки в зависимости от параметров (вес, режим) — variations of cg limits with parameters (weight, regime)
- шага (воздушного) винта лист учета изменений — propeller blade pitch change record of revisions
скорость и. — rate of change
вводить и. (напр. по бюллетеню) — include revised information
приводить в соответствие с последними изменениями — bring up-to-date. effective pages brought upto-date.
реагировать на и. — respond to changes