| 释义 |
alphaal‧pha /ˈælfə/ noun [countable usually singular]   alphaOrigin: 1200-1300 Latin, Greek - Fresh soil samples, taken recently in the presence of journalists, are currently being investigated for gamma rays and alpha particles.
- Glucagon is produced in the pancreas by the alpha cells.
- Hemoglobin F, or fetal hemoglobin, is composed of two alpha chains and two gamma chains. 214.
- Recordings of sleep-deprived subjects have shown a reduction in the amplitude of alpha rhythms.
- The isotopes give off long-lasting alpha radiation and the waste will remain dangerous for 3000 years or more.
- The radiation emitted by these isotopes consists of alpha particles, beta particles, and gamma rays.
► Letters & punctuationA, nounABC, nounalpha, nounalphabet, nounalphabetical, adjectiveampersand, nounapostrophe, nounasterisk, nounB, nounbeta, nounblock capitals, nounblock letters, nounbrace, nounbracket, nounbracket, verbC, nouncapital, nouncapital, adjectivecapitalize, verbcaps, cedilla, nouncircumflex, nounclause, nouncolon, nouncomma, nounconsonant, nounCyrillic, adjectiveD, noundash, noundelta, noundiacritic, nounditto, nounE, nounexclamation mark, nounF, nounG, noungamma, nounGothic, adjectivegrave, adjectiveH, nounhyphen, nounI, nounIPA, nounJ, nounK, nounL, nounletter, nounlower case, nounM, nounN, nounNHS, the, O, nounoblique, nounomega, nounP, nounparenthesis, nounperiod, nounpunctuate, verbpunctuation, nounpunctuation mark, nounQ, nounquestion mark, nounquestion tag, nounquotation mark, nounR, nounrune, nounS, nounschwa, nounscript, nounsemicolon, nounslash, nounsmall, adjectivespeech marks, nounsquare bracket, nounstar, nounstenography, nounstress mark, nounT, nountilde, nounU, nounumlaut, nounupper case, nounV, nounvowel, nounW, nounX, nounY, nounZ, nounzed, noun ► gamma/alpha/beta radiation technical (=radiation given off by the atomic matter of gamma, alpha, or beta rays)· The conventional treatment for cancer is to bombard the tumour with gamma radiation. NOUN► male· Females often try to escape from the alpha male's vigilance, and will go up to the beta male and solicit copulation.· You see it in nonhuman primates, where the new alpha male comes into the troop and mates.· They turned themselves into cartoon alpha males.· They were also friendlier towards female infants and those not fathered by the current alpha male.· Overall, females were friendliest and least aggressive towards alpha males, regardless of their treatment of infants.· Since females reap substantial protective benefits from associating with alpha males, this is perhaps not surprising.· They might find themselves having to do some serious work, with concomitant loss of status among the other alpha males. ► particle· The radiation emitted by these isotopes consists of alpha particles, beta particles, and gamma rays.· Helium is also made by radioactive decay of uranium and thorium, both of which decay by emission of alpha particles.· Fresh soil samples, taken recently in the presence of journalists, are currently being investigated for gamma rays and alpha particles.· The helium atom without its electrons is known as an alpha particle, and is therefore positively charged.· Radium is readily absorbed into the body where it concentrates in the bone marrow and gives off very damaging alpha particles. 1the first letter of the Greek alphabet2the alpha and omega formal the start and finish of something, and therefore the whole of it:  Collective bargaining was viewed as the alpha and omega of trade unionism. |