The replicas are made by using a thin film of fusible alloy on a stiffening platen . 復(fù)制是用附著在加強(qiáng)托板上的可熔合金薄膜實(shí)現(xiàn)的。
A reliable machine shop can cut away a small amout of metal from the aft side of the mounting flange so that the lens will set closer to the film platen . 可以請(qǐng)經(jīng)驗(yàn)豐富的機(jī)械加工車間從安裝凸緣的后部切削掉少量的金屬,這樣就能使透鏡更加靠近膠片平面。
Non touching and tiltable split type bronze side platens 同樣還有非接觸式銅質(zhì)側(cè)擋板。
Safety standard - stand - alone platen presses 獨(dú)立操作的滾壓機(jī)安全標(biāo)準(zhǔn)
Non - touching split type bronze side platens 非接觸式分離青銅側(cè)擋板。
the roller on a typewriter against which the keys strike
the flat plate of a printing press that presses the paper against the type
work table of a machine tool
百科解釋
A platen (or platten) is typically a flat metal (or earlier, wooden) plate pressed against a medium (such as paper) to cause an impression in letterpress printing. Platen may also refer to a typewriter roller which friction-feeds paper into position below the typebars or print head.