| 单词 | pretreatment |
| 释义 | preˈtreatment, n. and a.
A. n. [pre- A. 2.] Treatment given beforehand. Also attrib.
1925Jrnl. Forestry XXIII. 921 Within each pretreatment the seed experienced variations of that treatment. 1946Nature 23 Nov. 748/2 Effective control was measured six weeks after treatment, all plots in this case having received pre-treatment with nitro-chalk seven days in advance of the weed-killer application. 1955New Biol. XVIII. 88 Freshly excised grafts, after pre-treatment with 15 per cent glycerol in Ringer, were sealed off in glass tubes and frozen. 1961Times 12 Apr. 17/6 The coil of steel is passed through chemical pre-treatment baths. 1973Times 29 Oct. 20/7 Liquid wastes from all trade and industrial sources, broadly speaking, drain without pre⁓treatment in to the River Tees or into Tees Bay. 1978Jrnl. R. Soc. Arts CXXVI. 686/1 The aim of pre-treatments is to increase the action of the adhesive bonding forces by eliminating greases, dirt and the oxides which exist on the surface.
B. adj. [pre- B. 2.] Existing before treatment.
1961Lancet 2 Sept. 499/2 This..gave an opportunity for estimation of the pretreatment level of serum⁓cholesterol. 1962Ibid. 12 May 989/2 In 1 other patient infected with a proteus strain, organisms isolated during and after treatment were more resistant than the pre⁓treatment cultures. 1972Jrnl. Social Psychol. LXXXVI. 84 The..pretreatment mean attitude score for the nine treatments is approximately equal. |
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