• Until (very) recently, most porcelain enamels possessed limited alkali resistance.

• Until (very) recent times the Nile valley was not really irrigated.

см. тж. до сих пор

• The laser used to date has required ...

• The gap between the two portions of Saturn's ring is called "Cassini's division" to this (or the present) day.

• The switch makes possible heretofore impractical applications of ...

• Huge reserves of ore, hitherto virtually untouched, will become available.

• To date our highest emitter power has been ... wt/cm[sup]2[/sup].

• This movement is observed to the present (or this) day.

• Until the present time few investigations have been conducted of ...

• Up to now, there has been no detailed work done to find ...

I

см. тж. ~водить ~

• The lake is up to 600 m deep.

• The total number of asteroids is estimated to be as high as 100,000.

• As many as 50 individual reaction steps might be necessary for complete synthesis.

• If the region of accumulation is extended as far as the emitter ...

• These losses may be as much as 1.5% of the silver present.

• Barretters can measure powers as small as 10[sup]-8[/sup] watt.

• We have made wire in sizes down to 0.005 in diameter.

• The heater will heat the gas to the desired temperature.

• This will heat the thermistor enough to lower the resistance to 200 ohms.

• Pieces weighing up to (or not over) three kilograms may be used for the test.

II

см. тж. впредь ~; за год ~; иметь толщину ~

• The group I tRNAs arose prior to the others (биол.).

• Prior to the seventeenth century ...

• Until the Three Mile Island accident the most widely discussed type of reactor malfunction was ...

• Prior to testing, all specimens were dried.

• This decreases time to rupture.

III

• Paste adhesives are knife-coated to uniform thickness.

IV

см. тж. перед

• A globe valve is installed in the supply air line, upstream from (or of) the reducer, so that the air may be shut off by hand.

V

см. с точностью ~

см. в кратчайшее ~; в настоящее ~; в наше ~; в период; в последнее ~; в самое последнее ~; в своё ~; в скором времени; в срок; в течение; в то ~; в то же ~; в то или иное ~; во времени; во ~; всё ~; дать ~; до настоящего времени; до последнего времени; до сих пор; за ~; за период; зависящий от времени; изменяться во времени; используемый в настоящее ~; к настоящему времени; к тому времени когда; на всё ~; настало ~; необратимый во времени; примерно в то ~, когда; с момента; с течением времени; со временем; требовать много времени; через некоторые промежутки времени; через равные промежутки времени

общая лексика

до последнего времени

см. тж. от времени до времени

• Today we see weather balloons on occasion, but passenger balloons are very rare.

• Every now and then, the blade may strike a bump, breaking loose fragments of ...

• The computer itself blunders (every) now and then.

• For 600,000 years rhyolitic lava erupted on the Yellowstone Plateau intermittently.

• At times (or From time to time), the basin water is shock treated.

• Evaporate to dryness, turning the granules occasionally to insure uniform coverage.